Malicious PDF — malware analysis report

Static analysis result for SHA-256 b90984b1d87df6d4…

MALICIOUS

PDF

43.9 KB Created: 2020-08-02 13:58:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6e5aadf497e75e3941820254ed27693b SHA-1: 14ee1148df8684298dded05a7b93bf645d4d2c9e SHA-256: b90984b1d87df6d400e418cb7609ed3ab19ba4a86bbc2fb52aec5fe51d210d94
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=long+train+running+chords'. This URL is presented within the document body, disguised as song chords, to entice users to click. The PDF also exhibits characteristics of a link farm, with numerous external links, many hosted on cdn.shopify.com. The primary malicious IOC is the redirector URL, which is likely used to funnel victims to further malicious content.

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=long+train+running+chords In PDF document text
    • http://files.moralehemp.com/uploads/1/3/1/3/131398221/gofijofiwom-zafov-bojitatazemavig-tubapuvava.pdfIn PDF document text
    • http://files.a-la-karte-online.com/uploads/1/3/2/7/132740547/8c986e186.pdfIn PDF document text
    • http://files.helbreathng.online/uploads/1/3/0/7/130739831/4414319.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/1/0427/3248/6823/files/76906812095.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3910/4917/files/mosavedinereni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4746/1788/files/sexumanibafasimefu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0721/2694/files/zogabefofiramefowejogez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5733/8776/files/pathfinder_magus_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4074/3329/files/34009967168.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4739/4199/files/physics_laboratory_manual_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3576/1567/files/45786407115.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1458/6521/files/19860552697.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/7671/0563/files/lightning_arrow_ds3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6605/5063/files/segaranodexesupuxete.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 6

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_off0000623b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x623B 5108 bytes
SHA-256: 5ebf4edda3a8882bbfd1fc5b59b417cb76445fc13e9f84bb60fc87ce6fa1a80c
font_01_sfnt_off00007398.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7398 14516 bytes
SHA-256: a03433de3e41edc897750b10eb151cbf091b9a7f0aa07bef33ff3f610bdb92be

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