Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fb25d173fd6d248…

MALICIOUS

PDF

44.0 KB Created: 2020-08-12 13:02:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 14edc609097fbefbd8cbc0bd2b606307 SHA-1: 867234d7b8b7565a6ca3a317351802970e2bc8d1 SHA-256: 7fb25d173fd6d2480941e8d7b6e81e9fb6ccfb1727303166018c56a17287e88d
194 Risk Score

Malware Insights

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

The PDF file contains numerous links designed to manipulate search engine results, leading users to a redirector URL. This redirector, 'https://ttraff.cc/pify?keyword=lbs+to+kg+chart+pdf', is flagged as malicious. The document body, though heavily obfuscated, also contains this URL, suggesting a phishing or scam attempt to lure users to malicious infrastructure. The presence of many external links points to a link farm strategy.

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.cc/pify?keyword=lbs+to+kg+chart+pdf In PDF document text
    • http://files.villadesbambous.com/uploads/1/3/1/3/131379622/7807861.pdfIn PDF document text
    • http://files.skintwalletsusa.com/uploads/1/3/0/9/130970009/4881129.pdfIn PDF document text
    • http://files.jmsdvs.net/uploads/1/3/1/3/131398362/zokoruwularozabefu.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/1/0448/0489/8978/files/components_of_health_related_fitness.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3956/3686/files/zabobej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9151/6826/files/65495928437.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/3915/1512/files/jomuzowifegagi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2567/0037/files/56564481018.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9010/8833/files/43157314627.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6590/8136/files/zubixigafewomojimezuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6735/7846/files/mupisavegumas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5538/0630/files/xonizudipagovelafe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9345/1159/files/medical_laboratory_safety_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8545/3730/files/aprender_a_tocar_acordeon_de_botones.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6761/3087/files/bsa_medical_forms_abc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/80463449019.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8122/7672/files/17417741134.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_off0000645a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x645A 5528 bytes
SHA-256: 30ff7293aeca043e4ffa06a2f55dc138fdc3ae6d1d2d91e2d46bbea9cbc1e2a2
font_01_sfnt_off0000771a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x771A 13808 bytes
SHA-256: aa973b62f6d71352ae2c92d3fba8dc5f5a311f064e2dfddf22aeb692b8aafd5a

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