Malicious PDF — malware analysis report

Static analysis result for SHA-256 41d7e5c6f6bb9eb2…

MALICIOUS

PDF

64.2 KB Created: 2021-02-20 19:52:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 076ebd7fce00beab4c5874893a02d133 SHA-1: 2d8c390e6c7edab05e351096941e47ad28e4a264 SHA-256: 41d7e5c6f6bb9eb2ef1edbd45165eb16e6f9219c9a28cc17e798b1096f38e08b
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous external links, many pointing to SEO-optimized PDF gateways, suggesting a link farm or phishing campaign. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though garbled, includes a lure related to 'Schwinn 201 recumbent bike parts', which is likely a pretext to encourage users to click on the malicious links.

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://seumenha.ru/strik?utm_term=schwinn+201+recumbent+bike+parts PDF link annotation
    • https://mulokigapasol.weebly.com/uploads/1/3/1/0/131070847/8086272.pdfIn PDF document text
    • https://s3.amazonaws.com/wutisigila/sakovaruvetokubifamafi.pdfIn PDF document text
    • https://nalokulomegeze.weebly.com/uploads/1/3/4/7/134758193/nirogonu.pdfIn PDF document text
    • https://s3.amazonaws.com/jasipefulaxiduj/how_to_pay_your_small_business_taxes.pdfIn PDF document text
    • https://s3.amazonaws.com/makixibawumebol/16118680915.pdfIn PDF document text
    • https://s3.amazonaws.com/pojikovewijeja/the_transactions_contemplated_hereunder.pdfIn PDF document text
    • https://s3.amazonaws.com/zodererezuzuxi/zikinekewoxopupikezudo.pdfIn PDF document text
    • https://s3.amazonaws.com/zalisujezajaje/9697246989.pdfIn PDF document text
    • https://jasazifo.weebly.com/uploads/1/3/1/4/131437377/7c2d0.pdfIn PDF document text
    • https://s3.amazonaws.com/mozedijiz/angular_formbuilder_disabled_attribute.pdfIn PDF document text
    • https://s3.amazonaws.com/sowirutelevolur/foriraxilofi.pdfIn PDF document text
    • https://s3.amazonaws.com/joterige/77690634166.pdfIn PDF document text
    • https://zisetilu.weebly.com/uploads/1/3/1/3/131382786/1010875.pdfIn PDF document text
    • http://cloudplay.xyz/35045906435aqydu.pdfIn PDF document text
    • https://s3.amazonaws.com/tadevewuju/rodafax.pdfIn PDF document text
    • https://s3.amazonaws.com/xamibebulosaxug/jitterbug_smartphone_user_guide.pdfIn PDF document text
    • http://tameeniraq.com/61451647102kwg3y.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b3bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB3BF 3080 bytes
SHA-256: 3ea9dc0fe5daeba8b7c1286de8752a991578e51b79301a8010be3d8f06b4997c
font_01_sfnt_off0000bec7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBEC7 5864 bytes
SHA-256: b39fd83e706aa7c49590f8f42e6407716ee1eaae585e5c8dcf5e1044fa579da6
font_02_sfnt_off0000d2a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2A8 9508 bytes
SHA-256: f72b9e26679a5ce265cfc8af390d441381bef0ba453cb86700f57cf28f242da1

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