Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1ea4ee9dfc2854e…

MALICIOUS

PDF

77.9 KB Created: 2020-12-05 10:50:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 9cea51a2007ef3187a60f9d8ce47d2c8 SHA-1: 377c5fa96f5704c32c1f86bc47a7a2e5952078f2 SHA-256: b1ea4ee9dfc2854ebbec469c37eca88879fb5419eab5d09f7827d79d63a308fa
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristic 'PDF_SEO_LINK_FARM' suggests the document contains numerous external links, likely to distribute malware or engage in SEO manipulation. One of the primary external links identified is 'https://trafftec.ru/123?utm_term=goku+all+transformations+power+levels'. No scripts were extracted, but the presence of a link farm points towards a phishing or content distribution attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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://trafftec.ru/123?utm_term=goku+all+transformations+power+levels PDF link annotation
    • https://jifejajazarig.weebly.com/uploads/1/3/4/3/134307839/ed6b8cb2b683ffe.pdfIn PDF document text
    • https://lisokafi.weebly.com/uploads/1/3/4/6/134694643/2723384.pdfIn PDF document text
    • https://radigaligoled.weebly.com/uploads/1/3/4/3/134333621/7158f1a0b5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462726/normal_5fc1b0d1c8be2.pdfIn PDF document text
    • https://rubosesizip.weebly.com/uploads/1/3/4/7/134744628/ec7056dbf28.pdfIn PDF document text
    • https://voligamaxe.weebly.com/uploads/1/3/4/5/134512074/pezutulexose_vovug_kefuseluke_dudil.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/xilasisefi/sezorijimenatejerekimaxo.pdfIn PDF document text
    • https://s3.amazonaws.com/tajimipojimo/ielts_listening_hiring_a_public_room_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/xipavir/cara_bleach_brave_souls_ios.pdfIn PDF document text
    • https://s3.amazonaws.com/jemazejodep/9429058341.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcf66900f7af3919d2fbd1/1606219373162/growth_of_the_thirteen_colonies_worksheet_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/tanikanaw/81306402192.pdfIn PDF document text
    • https://s3.amazonaws.com/dowavelaxam/activesheet._protectcontents_false.pdfIn PDF document text
    • https://s3.amazonaws.com/vavapekadoliti/53513163780.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f2f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2F7 5296 bytes
SHA-256: b4d3ae1a4fa36525e479f5a79547208d534787098cf624f836f74b3692bf286d
font_01_sfnt_off00010506.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10506 11016 bytes
SHA-256: 1d67562c2914fd986cc1022f3ae8c45c0c62afee52ab93dbd32ae95b97a5559a

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