Malicious PDF — malware analysis report

Static analysis result for SHA-256 d007a3fc75461e89…

MALICIOUS

PDF

87.1 KB Created: 2021-08-01 10:27:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 644926a10bdcc1953a029c0d452afcd4 SHA-1: 0bfd4f612e0f68258ffb208a26071616007ad5d4 SHA-256: d007a3fc75461e89d03a1d2cbd4b17fb2e526481197f6eaf9575cb5854bc7da4
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file is identified as malicious by multiple heuristics and a machine learning classifier, with ClamAV detecting it as a phishing trojan. The document functions as a link farm, directing users to numerous URLs hosted on compromised websites, likely to facilitate the download of further malicious content. The presence of embedded URLs and the nature of the heuristics strongly suggest a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://medvor.ru/uplcv?utm_term=tamilrockers+tamil+dubbed+cartoon+movie+free+download PDF link annotation
    • http://springgalleryng.com/Images_upload/files/89570800685.pdfIn PDF document text
    • http://stopasbestos.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160bfe45856a28---17903565854.pdfIn PDF document text
    • http://skup-laptopow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a4bced1da4---63906910253.pdfIn PDF document text
    • http://logo4you.dk/userfiles/file/tubifeliro.pdfIn PDF document text
    • https://betalinktech.com/blmedia/file/70267692931.pdfIn PDF document text
    • http://www.fullmooneye.com/wp-content/plugins/formcraft/file-upload/server/content/files/160add6fe94da8---moforefuwigamubekosiwom.pdfIn PDF document text
    • https://carlojans.com/cms/file/jejowobixopirefolinomifod.pdfIn PDF document text
    • http://tuvanthanhlapcongty.biz/upload/ck/files/xinaripe.pdfIn PDF document text
    • http://artmetinc.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608302f2d1a36---ralujofikekinufezoroli.pdfIn PDF document text
    • http://urduhadith.org/survey/userfiles/files/jejizi.pdfIn PDF document text
    • http://jonkmp.nl/img/cms/file/71675339766.pdfIn PDF document text
    • https://quimicasorocolor.com.ve/ckfinder/userfiles/files/balinikefeluremogowuxaped.pdfIn PDF document text
    • https://nationalcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cdcfd6188e2---vefajevafobifup.pdfIn PDF document text
    • https://nstyapi.com/resimler/files/fefasurefedo.pdfIn PDF document text
    • https://sieuthimayphat.com/ckfinder/userfiles/files/2491974229.pdfIn PDF document text
    • https://www.18fire.com/wp-content/plugins/super-forms/uploads/php/files/c1648c20daf1b895d83e8a80a5846059/gopawubuxojobo.pdfIn PDF document text
    • https://gtsonline.nl/wp-content/plugins/super-forms/uploads/php/files/lpij2q7v3fufh5qc43npc7uuo7/sawame.pdfIn PDF document text
    • https://augsburger-dartliga.de/uploads/file/58269424048.pdfIn PDF document text
    • http://fortlauderdalelimorental.net/wp-content/plugins/formcraft/file-upload/server/content/files/1609dd939c364a---92198360191.pdfIn PDF document text
    • http://guilfordvikingsclassof81.com/clients/4/47/479b0a304b4cdce99dfe3eda73a59016/File/gojisizibumu.pdfIn PDF document text
    • https://championsforchildren.org/wp-content/plugins/super-forms/uploads/php/files/ea6b19c2b75f23fb75c42f1d8b66d99b/97867520960.pdfIn PDF document text
    • http://www.trimbleexpress.sk/wp-content/plugins/formcraft/file-upload/server/content/files/160e2142410707---mibivowezi.pdfIn PDF document text
    • https://www.growxponential.com/wp-content/plugins/super-forms/uploads/php/files/sqrug86e5tljsss30075cfk6ap/63955511347.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f0c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0C6 16920 bytes
SHA-256: e38081e4a5a2d3524813d9ee211ee83d2bbcd021cc70b0367a7ad4e52d1efdbb
font_01_sfnt_off00011ccf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CCF 11084 bytes
SHA-256: 04fb2ed7428ee8259cfdf130530f7920554345f6be16636860e92abc8e815a66
font_02_sfnt_off000136b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x136B6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

Open this report in the interactive analyzer, or submit your own file for analysis.