Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e8881069bbf93e2…

MALICIOUS

PDF

82.3 KB Created: 2021-03-09 12:57:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 06c5cdee5601e594e3a36f6de5d68300 SHA-1: f0c6f1c782694cefb9ac413b4ba9d6ec063cfffe SHA-256: 9e8881069bbf93e2a8ff5f1fb7c8cafc6278755b775ae13192a2ae6645ab94d8
156 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including ML classification and ClamAV, indicating malicious content. It contains numerous external links, with a significant number pointing to Weebly and S3-hosted PDFs, suggesting a link farm or redirection mechanism. The presence of external URIs and the PDF_SEO_LINK_FARM heuristic strongly suggest the document is designed to redirect users to potentially malicious sites, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://ponafet.ru/aws?utm_term=standard+catalog+of+modern+world+gold+coins PDF link annotation
    • https://kozinawesi.weebly.com/uploads/1/3/3/9/133997283/jogevamenivenup-sejukeronifoto-pikedufoxolumib.pdfIn PDF document text
    • http://verifedform.com/bifonohzdpj.pdfIn PDF document text
    • https://xitetufiwirisax.weebly.com/uploads/1/3/4/0/134041449/887955.pdfIn PDF document text
    • http://mishabelle.ru/usb_player_circuit_diagramhatxr.pdfIn PDF document text
    • https://nulebuset.weebly.com/uploads/1/3/1/4/131411431/6e4b964dc511.pdfIn PDF document text
    • https://wuwikofoxanep.weebly.com/uploads/1/3/1/4/131437976/sifusamukapematam.pdfIn PDF document text
    • http://emirofficialzm.com/gogifutivivofuvo3i6dx.pdfIn PDF document text
    • http://top-agent.ru/metformin_for_pcos_2019mveuk.pdfIn PDF document text
    • https://jefaganogebe.weebly.com/uploads/1/3/1/4/131437435/8ce54236a.pdfIn PDF document text
    • http://qwert-ita.fun/how_to_play_spore_without_registration_coded21eu.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/jinotugiwomo/77910115971.pdfIn PDF document text
    • https://s3.amazonaws.com/xamapebonijos/sipavabezile.pdfIn PDF document text
    • https://s3.amazonaws.com/zibenoroduzuw/cover_letter_template_resume_genius.pdfIn PDF document text
    • https://s3.amazonaws.com/lewuli/kiledegatusunudit.pdfIn PDF document text
    • https://s3.amazonaws.com/rirusozo/mexalapivubadas.pdfIn PDF document text
    • https://s3.amazonaws.com/mejifavo/lulasamumu.pdfIn PDF document text
    • https://s3.amazonaws.com/xelimewat/how_flood_basalt_is_formed.pdfIn PDF document text
    • https://s3.amazonaws.com/wizidimawag/podomiledipabokaduxofuvu.pdfIn PDF document text
    • https://s3.amazonaws.com/daraniwekamidir/what_happened_to_the_lying_game.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7610942-05ee-4a87-8f7f-e560d76c0b80/should_everyone_go_to_college_stephanie_owen_and_isabel_sawhill.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b974ce6-7d4a-4c2e-86a3-9928bc3e5bf3/how_to_connect_jam_hang_up_speaker.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_off00010429.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10429 5536 bytes
SHA-256: 1b1c7953674a590a2aadd2c60a42fd7b799bebd3676bfc47ab77178603ecac41
font_01_sfnt_off000116fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116FA 10880 bytes
SHA-256: f9176f101277a0a055fbe56e7eb1129653638a1d0438ae983db34eca21703442

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