Malicious PDF — malware analysis report

Static analysis result for SHA-256 58f38fd3efe70afd…

MALICIOUS

PDF

65.7 KB Created: 2021-02-18 01:54:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 840be4c32704c0681c714e9309ae9424 SHA-1: 3320ff1746694dccf55cadf0c6b71dd7264e2c4c SHA-256: 58f38fd3efe70afd7e37946fffd77e7909cd969d7774ecb4b1b7a843b78f265f
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://baarspo.ru/123?utm_term=adding+and+subtracting+fractions PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4476954/normal_5fe54c0c91d73.pdfIn PDF document text
    • http://detonic-shop.website/49846815158vxrmq.pdfIn PDF document text
    • http://chambrehub.xyz/free_templates_for_board_games_to_print9b2mn.pdfIn PDF document text
    • http://citimart.online/854193134731s7sr.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457008/normal_600aa8a3c8a20.pdfIn PDF document text
    • https://wejigewaja.weebly.com/uploads/1/3/5/4/135400860/nigegud-valiseloza.pdfIn PDF document text
    • http://artelamp.store/simple_present_tense_file2et7h.pdfIn PDF document text
    • http://koreanluxe.com/35213587028yhkcy.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478132/normal_6028abc0242b4.pdfIn PDF document text
    • http://housefashion.ru/i_saw_the_devil_torrent8ntnu.pdfIn PDF document text
    • https://mumovukejepi.weebly.com/uploads/1/3/1/4/131483147/zuvure-witakat-podanulataton-xejisixigug.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xoxitazowakovit.rf.gd/14822929430.pdfIn PDF document text
    • https://s3.amazonaws.com/ladojenefe/merolabujobiwalimiriza.pdfIn PDF document text
    • https://s3.amazonaws.com/nefagolom/4480949139.pdfIn PDF document text
    • http://guwopide.rf.gd/78113348077.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_off0000c3bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3BC 5288 bytes
SHA-256: 429a84589d65847979a1830515f70f07b312db1c3b7c578b82aa06486dc91c19
font_01_sfnt_off0000d5c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5C9 10564 bytes
SHA-256: 0955de826ec9658117d33959f7e4a91f7809eee4b374b89ebceab55865c6ced3