Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3900bd34a1ffed2…

MALICIOUS

PDF

48.5 KB Created: 2020-08-28 15:40:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 813d952516fabc3eca23501eb19e69c1 SHA-1: 8a22e25700a5327ca3933daeb37ffbb80bb2c829 SHA-256: f3900bd34a1ffed205de3a7b95ee81ec2fa2f33f65c64d4832c1f055d18c15b3
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a redirector service (ttraff.com) that is flagged as malicious. The document body, though heavily obfuscated, contains the same redirector URL and appears to be a lure for free downloads, likely a phishing or malware distribution attempt. The presence of many external links suggests a link farm SEO tactic to attract victims.

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.com/pify?keyword=buddhist+books+on+grief In PDF document text
    • http://sonuwa.sonyaparra.com/uploads/1/3/0/7/130775478/burunazabizosukaxiv.pdfIn PDF document text
    • http://files.dramaaroundtheglobe.com/uploads/1/3/0/9/130969761/4681863.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/1/0434/4994/2176/files/completion_of_probation_period_letter_format.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9967/5041/files/vuvogosepafabetunowob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2035/2677/files/complete_babylonian_talmud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0727/0297/files/76871145215.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2224/4250/files/dodozutetafofafetizofagej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4774/6721/files/battle_of_antietam_apush.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1907/5737/files/the_pretty_reckless_albums.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3545/0774/files/fapamegoxetuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2571/8678/files/99149033163.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8611/1137/files/wedding_escort_cards_template_free.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 7

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_off000080e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80E4 5180 bytes
SHA-256: 15e8af6a773f7d10e397296d5726aabe6ca84cbf1edbbbf9d5f51c333acde3a6
font_01_sfnt_off00009272.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9272 10280 bytes
SHA-256: 582663328b22371aecd6c9cd184e51c1b6e0c6b7cff154e0c8a1f502df5a785b

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