Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffcb05effe6b80fa…

MALICIOUS

PDF

59.8 KB Created: 2020-12-14 15:33:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2f0a11c0e3c42938ffd3469cb0786f07 SHA-1: 19ed4a59d8323beaea4f036b2f4a28107422e6bb SHA-256: ffcb05effe6b80fab45026bea71f2c503f02c4441a9c733ebbfee77c19237167
214 Risk Score

Malware Insights

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

This PDF file contains a large number of embedded links, characteristic of a link farm or SEO spam campaign. One of the URLs, https://gettraff.ru/aws?utm_term=fearless+soul+gratitude%2528+guided+meditation%2529, is identified as a malicious redirector. The file's structure and the presence of numerous external links suggest an attempt to drive traffic to potentially malicious or unwanted sites, aligning with a phishing or malicious redirection attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://gettraff.ru/aws?utm_term=fearless+soul+gratitude%2528+guided+meditation%2529
    • https://cdn-cms.f-static.net/uploads/4428045/normal_5fa0e76397fd0.pdf
    • https://vutadatibanol.weebly.com/uploads/1/3/4/8/134883393/7794775.pdf
    • https://static.s123-cdn-static.com/uploads/4460465/normal_5fc8fac50f1fe.pdf
    • https://cdn-cms.f-static.net/uploads/4382976/normal_5f99e379e35b5.pdf
    • https://cdn-cms.f-static.net/uploads/4370309/normal_5f9fa352844d3.pdf
    • https://dopuxaponaxu.weebly.com/uploads/1/3/2/6/132695391/tezulejosolula_nilavasivaxisaf.pdf
    • https://sinuxogutit.weebly.com/uploads/1/3/4/5/134505158/dajimaxizari.pdf
    • https://sozivutapadonen.weebly.com/uploads/1/3/1/1/131164462/5234630.pdf
    • https://cdn-cms.f-static.net/uploads/4384825/normal_5f903bf026ea1.pdf
    • https://pudozewo.weebly.com/uploads/1/3/4/3/134311846/mivol.pdf
    • https://cdn-cms.f-static.net/uploads/4460230/normal_5fd23348bf446.pdf
    • https://zobirifojufegot.weebly.com/uploads/1/3/4/3/134374070/f44c3d1.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/085e7411-d43d-4de0-99b3-a967d55974b2/zetopegowaseti.pdf
    • https://uploads.strikinglycdn.com/files/001b8526-7340-424a-8158-a641747f97fc/gt_radial_adventuro_at3_all_season.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_off0000aac6.bin
b72080f2d80dd7c7edb79843057e7c0838108b74dd178379408cad136c568828		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAAC6 5252 bytes
font_01_sfnt_off0000bc96.bin
c5c6ea92dfa4fa9a8f130c79fa0540c62c330129babedc447d7611926654f19a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBC96 10592 bytes

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