Malicious PDF — malware analysis report

Static analysis result for SHA-256 b622b984efc0d3b6…

MALICIOUS

PDF

84.5 KB Created: 2021-07-09 07:14:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-15
MD5: cfb5fb621864183d56189203572a4433 SHA-1: ff00df055222a7587535af5cf528b94f7ebc9380 SHA-256: b622b984efc0d3b6ac69db3aec6f57393241721659c8c39073d73f86f94f1a1c
204 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document exhibits multiple indicators of malicious intent, including a high ML classification score and ClamAV detection as a phishing trojan. It contains numerous links to external sites, many of which appear to be compromised or disposable hosting, suggesting a link farm designed to distribute malware. The presence of a 'download button' lure and explicit password instructions for an archive further supports the conclusion that this document is intended to trick users into downloading and potentially executing a malicious payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://pistant.ru/uplcv?utm_term=miracle+crack+2.82+download PDF link annotation
    • https://aspaeng.com/files/image/files/94661072794.pdfIn PDF document text
    • https://albawadiroad.com/userfiles/files/4135137678.pdfIn PDF document text
    • https://arizonalightingsales.com/wp-content/plugins/super-forms/uploads/php/files/ddd506332d0f7ab1130563b444e0fbb4/fuxesudasekuxuko.pdfIn PDF document text
    • http://rollfactorytogo.com/uploads/files/5962182059.pdfIn PDF document text
    • http://pmdrecycling.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c3be8bc3646---68007042613.pdfIn PDF document text
    • https://bringem.de/wp-content/plugins/super-forms/uploads/php/files/3a59591fb4a6ff211c45775c9a4c47a5/89535523080.pdfIn PDF document text
    • http://t-p-fortune.com/userfiles/file/sodukigesumaduwa.pdfIn PDF document text
    • http://africa-emergence2019.com/userfiles/file/wavutukufugagasodogut.pdfIn PDF document text
    • http://stopasbestos.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160afbbc2f0c9e---19735099506.pdfIn PDF document text
    • https://retentionstudentexperience.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a637e5c97c0---28159473394.pdfIn PDF document text
    • http://cuacuonanbinh.com/userfiles/file/12442224406.pdfIn PDF document text
    • https://www.brunosistemi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160add98feacb7---fadefa.pdfIn PDF document text
    • https://malimbe.africa/wp-content/plugins/super-forms/uploads/php/files/253f4abe3d262ff9e0c88a741cbb8463/lunipupigojap.pdfIn PDF document text
    • https://wecafephuket.com/wp-content/plugins/super-forms/uploads/php/files/e26bu1j1892k67bn2ajec6154k/xivugon.pdfIn PDF document text
    • https://digireg.dk/upload/3351460424.pdfIn PDF document text
    • http://peterpan1996.it/userfiles/files/wedewagosugipasiwexovate.pdfIn PDF document text
    • http://anhbanglaw.com/userfiles/file/sadegidexeribaruduwepukuv.pdfIn PDF document text
    • https://bettenbaehren.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607d96c6930a6---4463999502.pdfIn PDF document text
    • http://vilaportugal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608317543de26---39590161446.pdfIn PDF document text
    • https://www.hotel-palladium.gr/wp-content/plugins/super-forms/uploads/php/files/hd534vcfutn37k63qjplqvimsk/zivep.pdfIn PDF document text
    • https://petkasem2hospital.com/images/upload/userfiles/files/joxon.pdfIn PDF document text
    • https://www.endthestigmacounselling.com/wp-content/plugins/super-forms/uploads/php/files/64pa7oehp87hji2h0ecqhdsac3/69517569623.pdfIn PDF document text
    • https://www.audioclinica.pt/wp-content/plugins/super-forms/uploads/php/files/5dmlhacnutab89q2sjcfjiisr7/wazovi.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e69e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE69E 17312 bytes
SHA-256: 645d84d9dc7745588ddda17c3998354027ee231c24844af2c9e3ee5f8925b1b8
font_01_sfnt_off00011434.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11434 10660 bytes
SHA-256: d9ca5433c5106297ef3ab9061188c82c0ec93a8ee0ef35c1af31427945b3a879
font_02_sfnt_off00012cdd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12CDD 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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