Malicious PDF — malware analysis report

Static analysis result for SHA-256 295110e5b1b4a5e0…

MALICIOUS

PDF

77.0 KB Created: 2021-03-22 15:43:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-13
MD5: 920a0828fd37a837d50a6be75a17de99 SHA-1: c0ca5b9326ed8bdc4ee3372e017a4560b95d6e8d SHA-256: 295110e5b1b4a5e03b79e7f2273b864e104af63438641a5fc83d33e945cf25bd
126 Risk Score

Malware Insights

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

The PDF file is identified as malicious by ML classifiers and ClamAV, and contains numerous external links. The document body, though heavily obfuscated, suggests a lure related to workout PDFs. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates the sample is designed to host many links on disposable infrastructure, likely for SEO poisoning or phishing purposes. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://bologen.ru/award?keyword=running+strength+workout+pdf PDF link annotation
    • https://xisedemagi.weebly.com/uploads/1/3/2/6/132681548/merisebul.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387702/normal_605715eed8461.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451363/normal_5fd102ba7a637.pdfIn PDF document text
    • https://ropedali.weebly.com/uploads/1/3/0/9/130969406/vonotiz-sineroru-folezapebubo-doxaxedusurave.pdfIn PDF document text
    • https://tovibimatajo.weebly.com/uploads/1/3/5/9/135963052/lijazoxuwefunevof.pdfIn PDF document text
    • https://mefusinumobidal.weebly.com/uploads/1/3/4/6/134679396/7588062.pdfIn PDF document text
    • https://xevefozivoro.weebly.com/uploads/1/3/5/3/135339272/ribulolubixiro.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486772/normal_6005fa1993438.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370542/normal_5fc6ce13d6b54.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/bejikefowu/converse_high_top_platform_black.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f628d4d5-9f3b-44d9-90dc-f67a2027b403/penny_stocks_to_buy_now_india.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c1c7f2b-02dc-4c79-92e0-17f226d58ea3/339994205.pdfIn PDF document text
    • https://s3.amazonaws.com/mevuzokekenojab/cambridge_to_huntingdon_guided_bus_timetable.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/807d87f1-cc53-4fd8-a6e6-d627b797273f/how_long_does_navy_seal_boot_camp_last.pdfIn PDF document text
    • https://s3.amazonaws.com/posufij/independent_clause_and_subordinate_clause_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/04f52c24-f82a-4ec8-8223-d81b190d11e8/traxxas_summit_1_10_rpm_parts.pdfIn PDF document text
    • https://s3.amazonaws.com/fajixe/kevir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c29251fa-8571-4c42-a86a-bcd05ed614e3/savila.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b1cadfe-917d-4efa-bddc-5a173c361fe7/5943069861.pdfIn PDF document text
    • https://s3.amazonaws.com/toguvaju/59750082809.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_off0000ee68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE68 5224 bytes
SHA-256: b21a046a1ba6760cd18d3ca9d218034d9f3d605a323717d46cdee38ba0e84635
font_01_sfnt_off0001004d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1004D 10768 bytes
SHA-256: 9bf3be342c3917d40befffb3dbbcb2ef8104e6492281e11e9aeefba735fe82bf

Open this report in the interactive analyzer, or submit your own file for analysis.