Malicious PDF — malware analysis report

Static analysis result for SHA-256 a431adaaf7ebd145…

MALICIOUS

PDF

40.7 KB Created: 2020-08-28 02:30:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7e965780053bf1345a875bc8c6cc91e7 SHA-1: 190795e8a6872872a3a53a648fcff0facdf46170 SHA-256: a431adaaf7ebd1455e2504366f6c893511caad22c2edd861d4897f82cd23a151
194 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one critical link pointing to a known malicious redirector. The document body, though obfuscated, contains the URL https://ttraff.cc/pify?keyword=dell+n4050+driver+support, suggesting a lure related to driver support. This redirector likely leads to further malicious content or exploits.

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=dell+n4050+driver+support In PDF document text
    • http://files.atxvegans.org/uploads/1/3/0/9/130969654/4f2d1289fbd93a.pdfIn PDF document text
    • http://fudofuvi.aroundtheworldin800days.com/uploads/1/3/1/4/131453574/giwojo.pdfIn PDF document text
    • http://files.saraelizabethtaylor.com/uploads/1/3/0/7/130775734/6015008.pdfIn PDF document text
    • http://fetemaje.nicoleangelique.com/uploads/1/3/2/7/132740649/b4448c5.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/1/0440/6296/5912/files/47682510760.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5804/4827/files/liwusisexomilipixo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5207/2086/files/metogi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1664/0923/files/xitelejoramev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8538/9221/files/extracurricular_activities_furry_game_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3971/8552/files/fafanuxob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7926/2615/files/avg_internet_security_2019_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2760/3354/files/jamivojazuxide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9780/8285/files/patolivozi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6104/1569/files/wokuge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8760/9497/files/jepogalabikevolok.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 5

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_off0000538a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x538A 5156 bytes
SHA-256: 4f371f1303109ea37161389e8af058020dfe4f9878861dd7536cc9a80c34fcd4
font_01_sfnt_off00006539.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6539 16704 bytes
SHA-256: c2add5ce0a11b955d1dd58a9138673e2ebc29e1293afdf588e7daab3552f0fba

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