Malicious PDF — malware analysis report

Static analysis result for SHA-256 44ce5a29d7ce15ef…

MALICIOUS

PDF

84.0 KB Created: 2021-09-20 00:51:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: c2c2f3596c745680638fd69388c93ebc SHA-1: 2a2c9dff21e8255f5e938e824bda84b4f468c990 SHA-256: 44ce5a29d7ce15ef90983856b70c27511d605eecda2da7c45dcc318d497ada70
172 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains multiple links, some pointing to compromised CMS uploads and others to disposable hosting, suggesting a link farm designed to redirect users to malicious sites. The presence of urgency and download button lures further supports a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://www.thecandystoresudbury.com/wp-content/plugins/super-forms/uploads/php/files/jc4r020megtcb8las5d1h3cj8t/59154514206.pdf In PDF document text
    • http://viajaconsciente.com/imagenes/userfiles/file/tukudegokelaluvopin.pdfIn PDF document text
    • https://accesoriosalmayor.com/images/userfiles/file/59744174516.pdfIn PDF document text
    • http://massintech.ru/img/outer/files/juzigorelapowopidoriluwiz.pdfIn PDF document text
    • http://cdn.eagle.mn/uploads/userfiles/files/93750074636.pdfIn PDF document text
    • https://zzhqhi.com/d/files/pipabelemuziw.pdfIn PDF document text
    • http://fermobkorea.com/userfiles/file/20210911134525.pdfIn PDF document text
    • https://motoquadro.de/userfiles/file/24689636872.pdfIn PDF document text
    • http://xn--aknmedical-yub.com/uploads/file/97741094958.pdfIn PDF document text
    • http://avon-bratislava.com/files/files/40866315936.pdfIn PDF document text
    • https://avela.md/userfiles/file/tebewarusedipekuvamo.pdfIn PDF document text
    • http://gazdalkodjokosan.hu/img/userfiles/file/repabumebeleruvesifutivu.pdfIn PDF document text
    • http://www.photonics-science.com/ckfinder/userfiles/files/21737031556.pdfIn PDF document text
    • http://bloodfaces.de/attachment/file/geluwux.pdfIn PDF document text
    • https://www.e-oswiata.olesnica.pl/ckfinder/userfiles/files/71471005921.pdfIn PDF document text
    • http://kwik-it.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1613b4c57d059e---xelulerowenezomimikaja.pdfIn PDF document text
    • https://ncfouting.com/wp-content/plugins/formcraft/file-upload/server/content/files/16147ad0120baa---990632661.pdfIn PDF document text
    • http://maketmaster.ru/admin/ckfinder/userfiles/files/nibug.pdfIn PDF document text
    • http://altiro.nl/home/tjerk/file/61542735999.pdfIn PDF document text
    • http://villkasz.hu/editor_up/sidemelo.pdfIn PDF document text
    • http://www.gieskestukadoors.nl/ckfinder/files/files/96454160414.pdfIn PDF document text
    • http://hengtongrongshang.com/jingkelun/userfiles/files/20210916181330.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BkSY9tpko7c/uplcv?utm_term=ratchet+and+clank+mobile+apkPDF link annotation
    • 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_off0000e199.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE199 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f9b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9B0 10788 bytes
SHA-256: d56c1f793e7ebb13480f4289ab985af05e9ebafff5d488c4c3b825781a1fded8
font_02_sfnt_off00011211.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11211 18492 bytes
SHA-256: 7d344ae57d0eca31fd8d941f50da3609bdd033c766c89efbcbd2f8ae5afbbe29

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