Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab4771261216e744…

MALICIOUS

PDF

69.5 KB Created: 2020-11-13 15:06:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 3d91b13ce4f7b9e4b14c01fc1a87a258 SHA-1: d3039d5c9e0ca80c58feccc7ea457ca4ee608206 SHA-256: ab4771261216e7444440c3c5ce33ff80a6c6ab46f5323e8edd3e60d636002b5f
104 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses an urgency-based lure. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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
  • 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://traffnew.ru/strik?utm_term=a+poetry+handbook+mary+oliver+ebook PDF link annotation
    • https://judorobizud.weebly.com/uploads/1/3/4/4/134455398/a6f69664.pdfIn PDF document text
    • https://xetasigebe.weebly.com/uploads/1/3/4/4/134443645/pubojiv.pdfIn PDF document text
    • https://xonujofepip.weebly.com/uploads/1/3/4/3/134385468/dokepuwosem_melemuwe_pozagozi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377678/normal_5f8be373e578e.pdfIn PDF document text
    • https://finudumibinad.weebly.com/uploads/1/3/4/3/134344164/katufakujovizezetisu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/226f1a86-c90d-4fac-9445-c9d1d07a04f6/anchor_bolts_design_examples.pdfIn PDF document text
    • https://s3.amazonaws.com/jijumupade/notizepuzu.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/27571741255.pdfIn PDF document text
    • https://s3.amazonaws.com/mubemutolewe/aganglionic_megacolon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0860e922-7ee8-42e6-b5f3-bcbb49b3c564/1465392832.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/jusixamef.pdfIn PDF document text
    • https://s3.amazonaws.com/rekibedafowow/a_sound_of_thunder_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/nabifovu/words_of_encouragement_for_a_depressed_friend.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_off0000d386.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD386 5376 bytes
SHA-256: d1067e5cb45236e8394424aa48c3757fc128b1eee35810a1eb3c540788c269bd
font_01_sfnt_off0000e5ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5AC 10688 bytes
SHA-256: fa0185d6d0612169b601edd4c465e27df89c58f20b6402e40e6f037c11b0c7dd