Malicious PDF — malware analysis report

Static analysis result for SHA-256 c14dc0db1779dc06…

MALICIOUS

PDF

65.7 KB Created: 2021-02-21 23:44:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 0b66a15e8e6f50ff5bd550fb8185b504 SHA-1: 382ffbf679a501be1aa1ebf8782d245872263074 SHA-256: c14dc0db1779dc067ab2f0e952eae4a71b5c2aad68fa05536743d5bab98f5f9b
196 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains numerous external links, including a prominent one to 'baarspo.ru' disguised as a guide for unclogging a soap dispenser. This URL, along with others pointing to Weebly and f-static.net, suggests a link farm or phishing lure. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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/strik?utm_term=how+to+unclog+simplehuman+soap+dispenser PDF link annotation
    • https://ruzudagozigiwis.weebly.com/uploads/1/3/5/3/135394236/wowamawokinu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453117/normal_5fd86ee5e8a66.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380867/normal_602e64eaa9fec.pdfIn PDF document text
    • https://cdn.sqhk.co/nosilaxuziz/ihxvhdz/pasuximavifunulefizakif.pdfIn PDF document text
    • https://daxajofu.weebly.com/uploads/1/3/0/7/130740026/650e4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382639/normal_6021f8a537297.pdfIn PDF document text
    • https://cdn.sqhk.co/dusaradezat/Tgeuha0/45322232028.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420911/normal_5fddddff8c8ad.pdfIn PDF document text
    • https://cdn.sqhk.co/remigalakefo/chahjih/lord_of_heroes_contract.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/wiwuxot/30168182926.pdfIn PDF document text
    • https://s3.amazonaws.com/vedexajawo/favefolobitorefisorodile.pdfIn PDF document text
    • https://s3.amazonaws.com/jepinebawo/mikolisatemulave.pdfIn PDF document text
    • https://s3.amazonaws.com/gurupixabogivaz/sheet_music_boss_russian.pdfIn PDF document text
    • https://s3.amazonaws.com/temujonuwu/bean_sprouts_nutrition_information.pdfIn PDF document text
    • https://s3.amazonaws.com/wuwabobujasivor/2d_shapes_and_3d_shapes_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/suzujewa/bhagavad_gita_as_it_is.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_off0000c5db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5DB 5540 bytes
SHA-256: 82204b8b1b525eee211fd99d37087cd734fea9a6aadb8c856cb757a7379d795d
font_01_sfnt_off0000d896.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD896 9772 bytes
SHA-256: 3a18519fc3feb5a31761467ad0fba87aa957474bcfc67870e43cf1c1524ee399

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