Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fb4da5a8ad7e791…

MALICIOUS

PDF

48.4 KB Created: 2020-08-10 19:59:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b99a11dc6bc4f6f6c56b62bcf033caf7 SHA-1: 427c292b8a70ec0760229300fba197dcdfed19e1 SHA-256: 7fb4da5a8ad7e791a26c509e906a691d66d541cd0ef41664abbf7b9667cb447a
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to redirector infrastructure. The primary redirector URL, 'https://ttraff.ru/pify?keyword=algebraic+geometry+gathmann+pdf', is flagged as malicious and associated with SEO link farms. This suggests a phishing or scam attempt to drive traffic to malicious sites under the guise of providing a document.

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=algebraic+geometry+gathmann+pdf In PDF document text
    • http://xeborazi.pressurewashingnorthlasvegas.com/uploads/1/3/1/4/131482976/7984051.pdfIn PDF document text
    • http://files.breathingspacecounsellingpractice.com/uploads/1/3/0/9/130969580/rururinotinoro.pdfIn PDF document text
    • http://zejesix.northcountyhumanresources.com/uploads/1/3/0/9/130969551/a00c4ea4.pdfIn PDF document text
    • http://sekivom.dulcetdecibels.com/uploads/1/3/0/8/130814328/numeja.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9524/5475/files/midejo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6888/3098/files/nijabitaponagi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9685/1111/files/poe_leveling_guide_70.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8413/6086/files/pofumuzubosijiwux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2806/0059/files/p90x_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9928/2845/files/57104643177.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4978/8327/files/68152232889.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/51268900441.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1883/0492/files/3740156962.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9807/9399/files/bojipu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8085/2383/files/papulabowowu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3846/6467/files/36070571751.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006f76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F76 5412 bytes
SHA-256: bec104bafd1033a6e6b62f11b26c0719d84808bbd333dd70c15752a94b34aed2
font_01_sfnt_off000081b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81B0 10756 bytes
SHA-256: 94c8a6c5b856f4020127182ccb55d06a7fa35426cfb75737320c6e35119f0bab
font_02_sfnt_off0000a640.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA640 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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