Malicious PDF — malware analysis report

Static analysis result for SHA-256 09f65b41ffd33c1b…

MALICIOUS

PDF

91.2 KB Created: 2020-11-19 14:13:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: ae275590c22fd356e7cb5d2ad906ac7c SHA-1: 19b2a09b5df2bca7b58e1bbadde7ae0a1c6b20a0 SHA-256: 09f65b41ffd33c1bb515d31dd48ea753fdd308933a7707201c233f1451440716
214 Risk Score

Malware Insights

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

This PDF document was flagged by multiple critical heuristics as malicious, including a redirector link and a link farm. The embedded URL 'https://traffmen.ru/123?utm_term=claim+and+evidence+worksheet+pdf' is identified as a known malicious redirector. The document's structure and embedded links suggest it is designed to lead users to malicious sites, likely for phishing or malware distribution. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

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
  • 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.
  • 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://traffmen.ru/123?utm_term=claim+and+evidence+worksheet+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4384645/normal_5f9a6ff33646a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386593/normal_5f93ebb631191.pdfIn PDF document text
    • https://fawawivog.weebly.com/uploads/1/3/4/5/134595284/raguzapitazozixunazi.pdfIn PDF document text
    • https://lugilalosu.weebly.com/uploads/1/3/4/3/134314137/bonipobejedi-vatalenixameje-ropawokosil-towebigemar.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445324/normal_5faf4ac1419fb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475392/normal_5fb3f24775b5c.pdfIn PDF document text
    • https://zelapagetuwuj.weebly.com/uploads/1/3/1/4/131406140/tumekudezew.pdfIn PDF document text
    • https://dirigesibujov.weebly.com/uploads/1/3/0/9/130969991/mejurilulomipupudu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374968/normal_5f9afa7a81255.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/b4bbb8ae-e459-4e4c-b031-dda5f17a3815/adjectives_that_start_with_q_to_describe_a_person_positively.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d1203908-e879-463b-8841-b9237097cc10/mufuroze.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a3bad7cf-5c35-4276-9951-c96413ae419c/jackie_robinson_s_obstacles_in_life.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f6b233e1-3229-443d-903f-2d02f9c96bdd/29210869997.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b9a55a26-aaf8-42ce-b5bd-17c026d27be4/89638302841.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad4bf4f9-f3b5-4092-98cf-974098fc412a/prise_fibre_optique_free.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011fe6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FE6 2828 bytes
SHA-256: 4aba2bb845853324476be69e5ed1bf4ff35002942389efac2b843cac1129f0e9
font_01_sfnt_off000129e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x129E1 5516 bytes
SHA-256: b3df618f76e0f69a2b4489275b26a5d46e0727957f2707a4b25d94f0fa218218
font_02_sfnt_off00013c8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13C8D 10168 bytes
SHA-256: 1ae34a00b6a2443a6442211ae1dd2c8d4c558dd81ea1fa8c145b904afaf101dd

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