Malicious PDF — malware analysis report

Static analysis result for SHA-256 c347cbf008be722a…

MALICIOUS

PDF

132.6 KB Created: 2021-04-19 00:18:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: c29d1b860de3751f57b01eb4bb0ccd30 SHA-1: 8c00049bd4a7c470cae8e6e17dfbd101cd3824b6 SHA-256: c347cbf008be722acb96bd17b133e0fc9fbc0c79d06a224b73a67ce52629520b
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

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
  • 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/strik?utm_term=what+mbti+type+was+hitler PDF link annotation
    • http://pedumerik.sportsontheweb.net/10247604776.pdfIn PDF document text
    • http://itverys.space/rain_dial_plus_irritrolfk69p.pdfIn PDF document text
    • https://wafugavewe.weebly.com/uploads/1/3/4/3/134369352/dc897.pdfIn PDF document text
    • https://cdn.sqhk.co/telazaje/Niiijhg/ar_product_catalogue.pdfIn PDF document text
    • http://samelike.site/lilys_garden_cheat_apk83s9l.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427091/normal_6009e8007e875.pdfIn PDF document text
    • http://svoytrylend.xyz/neforibozovedcwfd.pdfIn PDF document text
    • http://rabiwitijif.medianewsonline.com/34746052267.pdfIn PDF document text
    • https://cdn.sqhk.co/jolodovi/hjhiif2/nimebef.pdfIn PDF document text
    • http://jidapuxedepu.medianewsonline.com/is_ice_breaker_gum_sugar_free.pdfIn PDF document text
    • https://fokurojisek.weebly.com/uploads/1/3/1/4/131438639/6711373.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370309/normal_60115807d8ee6.pdfIn PDF document text
    • http://cupe1.ru/takaseraduziletovus49zl3.pdfIn PDF document text
    • https://cdn.sqhk.co/nivavepe/igighie/dufalazozigejerojav.pdfIn PDF document text
    • http://kafidovomiguvo.mywebcommunity.org/lowovugaxabunewubepisopo.pdfIn PDF document text
    • http://detonic-romania.website/iceberg_theory_of_culture_definitionk1u57.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373008/normal_605c894d9a937.pdfIn PDF document text
    • http://sekelenogake.getenjoyment.net/21247940950.pdfIn PDF document text
    • https://rinuvigilositu.weebly.com/uploads/1/3/4/4/134463450/3611540.pdfIn PDF document text
    • https://cdn.sqhk.co/sadetujadufi/ibuhbW2/download_xmeye_app_for_mac.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366385/normal_5ff4cf6d7ac61.pdfIn PDF document text
    • https://puzilefamurujuz.weebly.com/uploads/1/3/2/7/132712080/9971465.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/b27c6cbb-9fb9-448a-b183-6697d768bcc8/80647565870.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d4e73ed6-109f-4d3c-86d0-ad0ce468efce/2820030873.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7060c2c2-45e2-4479-b1ab-cb3c6b0f639d/71260818836.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_off0001bca7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1BCA7 4980 bytes
SHA-256: c65b1260fd70a1599ce9e0a9d249eed9d426345469ba6bb06cd0c6acf33e9528
font_01_sfnt_off0001cda0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1CDA0 12480 bytes
SHA-256: 853c9ad58c7dfdde71dc46e282f8bf5aa9df1d3ae59473f48c88d488e6ec56f2
font_02_sfnt_off0001f5e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1F5E3 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34