Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2fe94a69da6ff81…

MALICIOUS

PDF

67.6 KB Created: 2021-02-25 12:49:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: f3324242c6fafa3908870d0b39ac740a SHA-1: d32ce9e9fa9b9039f45fc8a70639f662a4a4e60d SHA-256: c2fe94a69da6ff8195cc6272868779a1150c1be7598039307a4460844cd3c999
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://yafferge.ru/award?keyword=dragon+ball+manga+box+set+amazon In PDF document text
    • http://flash-sar.online/candidate_rejection_email_format58dbt.pdfIn PDF document text
    • https://nolutoxut.weebly.com/uploads/1/3/4/6/134683805/jedanibirevedugig.pdfIn PDF document text
    • http://bloodcraft.online/cursive_handwriting_alphabet_worksheetsbtics.pdfIn PDF document text
    • http://rowifir.22web.org/nenamafanop.pdfIn PDF document text
    • http://1eyvgo.xyz/rational_choice_theory_and_religionk69j3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424632/normal_5ff2f66943901.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4494432/normal_5ff5bfaf4af8d.pdfIn PDF document text
    • http://pe50off.pro/talking_tom_game_in_jio_phone0vvlc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488570/normal_60173338f338f.pdfIn PDF document text
    • https://dodonixufaf.weebly.com/uploads/1/3/1/4/131453867/voxolirunuseva.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381302/normal_60317209ebb4d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://setebuvoterir.rf.gd/cal_fire_camp_fire_investigation_report.pdfIn PDF document text
    • http://woxenebifa.rf.gd/womens_dress_for_formal_wedding.pdfIn PDF document text
    • http://zepizevut.atwebpages.com/vilewinuxipiviwuxomiked.pdfIn PDF document text
    • http://jabodegodonirad.atwebpages.com/jamigelokubutilewakes.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_off0000ca0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA0C 5260 bytes
SHA-256: 22d8a3c27ff5762cf2f0dfdfe01b4458cafae848382cb170a14044d54b0418b1
font_01_sfnt_off0000dbe9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBE9 10512 bytes
SHA-256: 84722a0a77d5ec52ac3adac23fb1374b4e8197a68395422cdef069402744f48a