Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ee5bf0ff06c4bb5…

MALICIOUS

PDF

77.2 KB Created: 2021-05-30 19:40:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: f6235ef2b4a11c5fac7322cf92817ba3 SHA-1: 54d3fb21a68b9c2f6bf3207a0a06cb34334477be SHA-256: 7ee5bf0ff06c4bb5a67f29f6a5097ebb08889b121f1472000d8f321c0a81f928
186 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many hosted on disposable domains, suggesting a link farm or phishing lure. The ClamAV detection and ML classifier strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and numerous external links are indicative of techniques used to redirect users to malicious sites, potentially for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 6

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/123?utm_term=monthly+budget+template+word PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4454821/normal_5ff2e15dd5bce.pdfIn PDF document text
    • https://fubagodesipura.weebly.com/uploads/1/3/4/3/134326772/1036524.pdfIn PDF document text
    • https://jawiniralegewo.weebly.com/uploads/1/3/4/4/134492986/7293780.pdfIn PDF document text
    • https://duzopotubesafes.weebly.com/uploads/1/3/4/8/134890215/2066936.pdfIn PDF document text
    • https://tawojupaker.weebly.com/uploads/1/3/4/8/134885799/zukagu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485705/normal_5fee637321808.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390324/normal_6037575459f56.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482009/normal_5fd8306cade9b.pdfIn PDF document text
    • https://xotomunekezej.weebly.com/uploads/1/3/1/0/131070571/piwuwunufepiruxub.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484097/normal_6007e4a7bcd35.pdfIn PDF document text
    • https://dexixafavako.weebly.com/uploads/1/3/4/3/134348567/kafem-vanow.pdfIn PDF document text
    • https://pilazelade.weebly.com/uploads/1/3/5/3/135397465/vazinuguwaba.pdfIn PDF document text
    • https://famosufed.weebly.com/uploads/1/3/4/9/134900490/0e0ba0d.pdfIn PDF document text
    • https://dasifapuzo.weebly.com/uploads/1/3/1/4/131454731/1648735.pdfIn PDF document text
    • https://posuxosovovenev.weebly.com/uploads/1/3/4/5/134593520/26f33.pdfIn PDF document text
    • https://vimopoferozure.weebly.com/uploads/1/3/4/8/134858925/8775124.pdfIn PDF document text
    • https://xuxuroxipekawip.weebly.com/uploads/1/3/4/2/134265976/07a2d52f47f9d.pdfIn PDF document text
    • https://tujobofawoti.weebly.com/uploads/1/3/2/6/132695409/wuzoro.pdfIn PDF document text
    • https://vafumuwolefuz.weebly.com/uploads/1/3/5/3/135325426/92830e418aa6.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/8c28f6de-29b6-42a5-b05f-e6e9404499db/32927638185.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a47afac8-8b1d-4132-8f0e-70bec2ac51a3/merry_go_round_langston_hughes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0da6ea8c-f946-485e-90d7-bf63d8eb5be3/8282753098.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c122a23-a3a8-4974-a153-b487a64193e9/is_it_ok_to_tattoo_reiki_symbols.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4251382c-5687-4655-ae59-147095bb0e1e/software_development_company_near_me.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_off0000f0dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0DC 5532 bytes
SHA-256: 9a93f99408bed63cf8d95605b80f1e9d6620ddfc74e41535701294149e927bfd
font_01_sfnt_off0001039f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1039F 10540 bytes
SHA-256: 752175db8e48142bc9ae71789d330c0a997bce21b7c844ce34d100d9d98d3c09