Malicious PDF — malware analysis report

Static analysis result for SHA-256 4bd96678bf34f526…

MALICIOUS

PDF

38.2 KB Created: 2020-08-23 23:27:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 621468f454082cedbf956795b04b6d06 SHA-1: ef2d35f338fa53cddc10ebe60624e2408bb1a820 SHA-256: 4bd96678bf34f526a756af32d11c46086d12af9970e5d114dd26e3bac41ca479
194 Risk Score

Malware Insights

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

The PDF file contains numerous links, including one pointing to a known malicious redirector at ttraff.ru. This redirector is likely used to obscure the final destination and potentially deliver a malicious payload. The presence of a link farm suggests an attempt to game search engine results for the term 'windows media video maker free', likely as a lure.

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=windows+media+video+maker+free In PDF document text
    • http://files.powermoneywomen.com/uploads/1/3/1/4/131453144/sedarejajinobafulo.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/1/0431/5247/4267/files/labopulijitufupuzejulakid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0486/9277/files/43868488416.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5725/8395/files/tabel_asmaul_husna_dan_artinya.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6790/0061/files/78225127539.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3419/7666/files/xizelinugogakilekafalo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/84574839703.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7381/4182/files/nadoxad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0063/5290/files/7571032127.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6617/1297/files/food_adulteration_project.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7862/2111/files/18602767542.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6211/6002/files/zavawirosezomogefomivejeb.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 2

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_off000058dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58DC 5248 bytes
SHA-256: 94ab7017073347301bc46323811fce7ec4acb3c3b538309306019d0d1d122c4c
font_01_sfnt_off00006abc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6ABC 9836 bytes
SHA-256: dbec5ed292eb4d14d445c0dfa59873bf8b1f78e0f678a2ed6c8b4e04ca23a3fc

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