Malicious PDF — malware analysis report

Static analysis result for SHA-256 82d1083cc5f5af4f…

MALICIOUS

PDF

71.7 KB Created: 2021-02-11 01:42:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: c6562e096a0ea4d8faef94f725332b28 SHA-1: 9ed05d1e928819d7938d35d3de8dd9e47f6a8957 SHA-256: 82d1083cc5f5af4fd35ad9c70cd60e1770f8bf408a616dd74dc42ade49275eab
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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 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://seumenha.ru/123?utm_term=trailblazer+lift+kit+ebay PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4412592/normal_5fe632f569d28.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444117/normal_5ff8be2697625.pdfIn PDF document text
    • https://cdn.sqhk.co/vojeruzujuzi/riiidF8/word_connect_search_the_word_cheat.pdfIn PDF document text
    • https://nikevafojo.weebly.com/uploads/1/3/4/6/134680040/929118.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380395/normal_602463b1c9daf.pdfIn PDF document text
    • https://zizeximafebofiz.weebly.com/uploads/1/3/4/3/134369397/sozoza_fezolaga.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473340/normal_601029d356d05.pdfIn PDF document text
    • https://cdn.sqhk.co/vujagefamig/Mijgedo/39570924017.pdfIn PDF document text
    • https://cdn.sqhk.co/pabelewexo/gsFlicT/78406730874.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4502178/normal_601b50684be3a.pdfIn PDF document text
    • https://cdn.sqhk.co/xavipinav/K9wiiif/dead_man_walking_book.pdfIn PDF document text
    • https://towizitubozabo.weebly.com/uploads/1/3/5/4/135400713/7495b06e9f.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/wanasuvedigo/prijs_zonder_btw_berekenen_formule.pdfIn PDF document text
    • http://nerebadaguve.epizy.com/sadajenuv.pdfIn PDF document text
    • https://s3.amazonaws.com/wovigebi/nickel_cadmium_battery_advantages_and_disadvantages.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_off0000dd62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD62 4888 bytes
SHA-256: e7461bdfd0a3638eada4bfa733c859cbb709c316ec646f6c55d7c6aa14c7a48a
font_01_sfnt_off0000ee29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE29 10632 bytes
SHA-256: 8ed46e55d0fa8f1ed7239ac53cd0724b93e543d7c769ec4a60099323794137c5