Malicious PDF — malware analysis report

Static analysis result for SHA-256 37795c91eb0acbc1…

MALICIOUS

PDF

32.1 KB Created: 2020-08-06 21:43:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7d6a9679e1d8bcc4ff33b9ac2dad03c0 SHA-1: 23566a42be0c098a9fc70dba8d5ac2c26a4a0131 SHA-256: 37795c91eb0acbc1ce7870bea65d06955f57249f77ed8556ed5f23cac2206f38
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a link farm, which redirect to malicious infrastructure. The primary redirector URL is https://ttraff.ru/pify?keyword=sears+craftsman+radial+arm+saw+manual+pdf. This technique is commonly used to obscure the final malicious destination and evade detection. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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 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.
  • 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://ttraff.ru/pify?keyword=sears+craftsman+radial+arm+saw+manual+pdf In PDF document text
    • http://files.authenticbathroomrenovators.com/uploads/1/3/1/4/131410158/xoxewixifoweto.pdfIn PDF document text
    • http://files.westchesterwomenssoccer.com/uploads/1/3/2/6/132696030/2231103.pdfIn PDF document text
    • http://files.solucionesacabados.com/uploads/1/3/1/4/131483492/7646978.pdfIn PDF document text
    • http://files.orangevalleycreations.com/uploads/1/3/1/3/131383510/bujofaketuwomidabej.pdfIn PDF document text
    • http://files.pslhsband.com/uploads/1/3/1/4/131407445/kulubosu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0727/0312/files/ayumilove_link_skills.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8038/4674/files/dadekivagusupis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8833/9354/files/27004697211.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1667/5740/files/mivekudature.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pagujusevidunevaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2381/0211/files/61265022685.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0395/9720/files/atlas_of_human_anatomy_latin_terminology_7th_edition_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7503/4524/files/kuderedosajusuga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6753/1673/files/6461781827.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9820/0481/files/nefopadeto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2326/0058/files/arches_national_park_trail_map.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000042a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x42A3 5496 bytes
SHA-256: 464cb40caba7c4e830a0640d5110aecded64b450fd9c70bd508f0971a8938e62
font_01_sfnt_off00005551.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5551 8812 bytes
SHA-256: c464cefa86b0e11178462fa9647b02ee5044dbcf4ca65743ef0dd606c2d446d0

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