Malicious PDF — malware analysis report

Static analysis result for SHA-256 deab03fd34dcafb4…

MALICIOUS

PDF

90.9 KB Created: 2021-06-06 04:22:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 8d6ceef1ed0bb6f7a0c2de6ccc75d1af SHA-1: 58cc3fd3f81eb76f42dd3ea816f4bd456d911c93 SHA-256: deab03fd34dcafb40542f23fd056ca3ad14ab600b58b041856135bc99f393b07
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses a callback-phone (TOAD) lure and an urgency-based lure. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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
  • 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://pixomot.ru/pbw?utm_term=what+happens+if+you+miss+a+payment+at+aarons PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4415530/normal_5fe2c66716153.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4381971/normal_60b13f353b80f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373782/normal_5ff2e3540f07b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4472506/normal_60001930c0a01.pdfIn PDF document text
    • https://takaranedo.weebly.com/uploads/1/3/4/0/134017801/2161780.pdfIn PDF document text
    • https://tibiwurab.weebly.com/uploads/1/3/2/6/132695994/ed87c27c8bcd55e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417314/normal_603ee11e30deb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369917/normal_5fc7ea0e16505.pdfIn PDF document text
    • https://dapobatajixafaw.weebly.com/uploads/1/3/4/3/134310280/f69d47.pdfIn PDF document text
    • https://wesugakazoviran.weebly.com/uploads/1/3/4/8/134865790/909158d.pdfIn PDF document text
    • https://kitetunevoneg.weebly.com/uploads/1/3/4/7/134703129/4007516a2224.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477408/normal_5fe275fc3b0a4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489844/normal_5ffa6dad22086.pdfIn PDF document text
    • https://fukuzemuk.weebly.com/uploads/1/3/5/3/135306557/kamufodaka-jumile.pdfIn PDF document text
    • https://xitokudid.weebly.com/uploads/1/3/4/6/134688137/xezutikurodoji.pdfIn PDF document text
    • https://zefojakafi.weebly.com/uploads/1/3/0/7/130776787/ponari.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423189/normal_605670a71a497.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491671/normal_5fce2c8aa1f89.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4464301/normal_60b3028edaee4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375885/normal_5fcc6361ea9f9.pdfIn PDF document text
    • https://kidogotetivi.weebly.com/uploads/1/3/4/3/134375399/sikome-gofodezibaj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450037/normal_600d36278680b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454043/normal_6060a8f8b6eab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485946/normal_604f830c5a76c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/3ca10124-7d72-4d02-a296-fd73a2857d9c/xenedegunutuninidoxil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/261f517c-affa-4f1c-8604-c24c12ef06a3/forik.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011389.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11389 5104 bytes
SHA-256: 9fb26f1161df4d5d9235264b9cbc2dba3eb15b43dda6f12fa3655a4854411b92
font_01_sfnt_off000124c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x124C5 12020 bytes
SHA-256: 4fb87a8a8bb841787df2471ca814c93808d394b27a4e678d8948bb4d822fe370
font_02_sfnt_off00014da5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14DA5 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3