Malicious PDF — malware analysis report

Static analysis result for SHA-256 fcd04869a1074021…

MALICIOUS

PDF

63.5 KB Created: 2020-12-25 09:35:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 167969da17b0660eec40d3cfb6e114e5 SHA-1: 193a11ec104af966a19c48ee3b4d5622ba4b39cc SHA-256: fcd04869a10740217bdf45898ec79764ce8937780b7d868b0ef0db35b5cb91b0
156 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by multiple heuristics and a machine learning classifier, indicating a phishing or scam attempt. It contains numerous external links, including one pointing to 'traffnew.ru', suggesting it's part of a link farm designed to redirect users. The presence of embedded URLs and the overall structure point towards an attempt to deceive users, likely for credential harvesting or other malicious purposes.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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=1070+horizon+dr+fairfield+ca
    • https://seririgikum.weebly.com/uploads/1/3/0/7/130739922/pawevenoza-rubivetule-kobenipirukomun-rixomolo.pdf
    • https://tujonodup.weebly.com/uploads/1/3/4/7/134717107/04990a23a74a8e.pdf
    • https://saxexowiki.weebly.com/uploads/1/3/0/9/130969873/vusaxud.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/damevusom/76099964661.pdf
    • https://uploads.strikinglycdn.com/files/e53f4d02-5882-47b2-a5cc-407c85844e66/74449495412.pdf
    • https://uploads.strikinglycdn.com/files/29d0c686-7510-4c9c-82db-7f1ec0240a63/refer_to_a_multipage_from_the_workbook_level_excel_vba.pdf
    • https://s3.amazonaws.com/tagorarib/nemupopavamafiwadi.pdf
    • https://uploads.strikinglycdn.com/files/20465584-5662-43ef-bb51-3ca36c7e1d77/la_evolucin_de_consciencia_euan_mac.pdf
    • https://uploads.strikinglycdn.com/files/b9da665f-859c-4904-821a-2c44c4364386/azul_y_blanco_como_mi_corazon_comman.pdf
    • https://uploads.strikinglycdn.com/files/683a1f23-64bc-4fb0-94cf-d905b99d68fc/malukamilidivoxizoxoreve.pdf
    • https://uploads.strikinglycdn.com/files/87146d76-52fa-409c-bc18-f6799a2c1966/pilojodifazawinimaru.pdf
    • https://s3.amazonaws.com/vuforewebub/superannuation_guarantee_late_payment_offset_election_form.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bc62.bin
fa69d8623efddddcc0439c5f945dce658e880da6b945a3acd66f1f838312ffc9
pdf-font-stream PDF embedded font (sfnt) at offset 0xBC62 5160 bytes
font_01_sfnt_off0000cdfc.bin
26dd3a4669ad6bc7bfa28c46af711f499aabc6dad99a3b2b88062c4f310f24a8
pdf-font-stream PDF embedded font (sfnt) at offset 0xCDFC 10512 bytes