Malicious PDF — malware analysis report

Static analysis result for SHA-256 65feaecb2abb3c94…

MALICIOUS

PDF

39.1 KB Created: 2020-10-30 16:44:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 0855d4ce6b43aa00d2b3715b4eb28b80 SHA-1: 7ecf29c3d6069dfee160068813807f387875507c SHA-256: 65feaecb2abb3c946cf9003c1919c9441608e2a86f2e9220fd2b3b46ef620ba6
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links, with one specifically identified as a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'real estate' and a URL that aligns with the malicious redirector heuristic. The presence of numerous links hosted on disposable domains suggests an attempt to distribute malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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 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.
  • 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://cctraff.ru/strik?keyword=whitney+point+ny+real+estate In PDF document text
    • https://vilukenuxe.weebly.com/uploads/1/3/2/8/132814007/tamivejogu-fipurigewa-rofeku.pdfIn PDF document text
    • https://xazaguzomolak.weebly.com/uploads/1/3/4/3/134375957/xutoxixewanuk.pdfIn PDF document text
    • https://lixaworone.weebly.com/uploads/1/3/1/8/131871871/sopakasumut.pdfIn PDF document text
    • https://sovuzozasofebod.weebly.com/uploads/1/3/4/3/134343281/nufodurefenivog.pdfIn PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/tebavu_mofevuz_punoxibera_gijipomole.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/3c0ba7b0-cb1b-4bdb-97ec-2982b3d12e54/sony_super_steadyshot_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/38754005-6754-4efd-b994-9284a1501eae/vepevabuwoja.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/552af550-e336-4cc4-80f7-a8282cea5efa/45120678928.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2394/8183/files/55994836965.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a7f5e44-ea46-455f-91a2-2cd12f613b62/manhattan_5lb_book_of_gre_practice_problems.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/61365136550.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d4204af1-3238-4b29-8393-6679dca749c8/25798803032.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/0438/1349/files/jdm_license_plate_frame_amazon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b239a31c-c1d1-4160-8bd7-6bf3e351fdf5/50060432146.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_off000057f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57F7 5020 bytes
SHA-256: d2c2f13947964779ed63885e50b8c2fbf099c1e2cb056b41c90615567e3e44b1
font_01_sfnt_off00006916.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6916 11508 bytes
SHA-256: 328c577081e478ac090033f18cbb4d5722bb02f07f44967650a6daf6d0d4b35f

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