Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fc14e8d0531c554…

MALICIOUS

PDF

73.5 KB Created: 2021-03-01 00:44:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: aafdd3ffac29c3ba672cd95945938f4f SHA-1: 604578cd7c102ef188de8c8458ecfb44f52b68f4 SHA-256: 7fc14e8d0531c554e499bc120d4ada2493cd625acb6dbf91574c5294d9950da9
194 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The document contains a large number of external links, many hosted on disposable domains, suggesting a link farm or SEO manipulation tactic. The embedded URL and the document's deceptive title "Disney customer service training manual" point towards a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://resalured.ru/award?keyword=disney+customer+service+training+manual PDF link annotation
    • https://cdn.sqhk.co/xelajuwodaf/NhdNid3/judoxi.pdfIn PDF document text
    • https://nagiliju.weebly.com/uploads/1/3/1/4/131412426/funijiwafize.pdfIn PDF document text
    • https://cdn.sqhk.co/surodamiz/daiifCa/dog_balls_amazon.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459176/normal_603ba5e688102.pdfIn PDF document text
    • https://cdn.sqhk.co/dokederajo/jGhgSjb/76152668228.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409250/normal_5fd68a62d114a.pdfIn PDF document text
    • https://tuzakipimuvujuv.weebly.com/uploads/1/3/0/8/130813756/jogif_gosegav.pdfIn PDF document text
    • https://cdn.sqhk.co/someteku/apicgcl/police_officer_costume_womens_amazon.pdfIn PDF document text
    • https://cdn.sqhk.co/wemerofada/mdhjSjP/tudog.pdfIn PDF document text
    • http://pirewixuzejetin.iblogger.org/ford_l8000_parts_australia.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475580/normal_600d0e8051c59.pdfIn PDF document text
    • http://fusekimutoxi.sportsontheweb.net/72032022028.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/serogajugomiji/20560810457.pdfIn PDF document text
    • https://s3.amazonaws.com/wovugi/saselulo.pdfIn PDF document text
    • https://s3.amazonaws.com/tazopaju/sears_kenmore_sewing_machine_model_5186_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/febopa/nakoliziredirozisukepogis.pdfIn PDF document text
    • http://segugixitibuka.epizy.com/is_nordic_skiing_hard.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_off0000e4c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4C4 5280 bytes
SHA-256: 714cb03a2237b372eecd28ada722a1fa0c12ec9bd8bab11caf709ba9d3161c35
font_01_sfnt_off0000f6b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6B9 9956 bytes
SHA-256: f171c301a8ca447ca7a0851d600f872599ca31c4c109464e01d917311dec60b2

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