Malicious PDF — malware analysis report

Static analysis result for SHA-256 16092cdaea18904b…

MALICIOUS

PDF

48.8 KB Created: 2020-08-20 20:46:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 756573af464ac61c6e33a533cee5b0ff SHA-1: e5646a9ed8690c800aeb8450637cdc7ed051edb1 SHA-256: 16092cdaea18904b8fb2a39189e95e9968e59f06db6cdfe53cffb7036e0eff5c
194 Risk Score

Malware Insights

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

The PDF document contains numerous links, many pointing to a redirector service (ttraff.cc) which is flagged as malicious. The presence of a link farm and a malicious redirector suggests an attempt to lead users to malicious websites, likely for phishing or malware distribution. The ML classifier also strongly indicated maliciousness.

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=fructose+malabsorption+guide%2528+low+fodmap+diet%2529 In PDF document text
    • http://files.10sided.com/uploads/1/3/2/6/132695416/7f5e4b3917.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/1/0427/9923/5228/files/xokixojalafogubivopemu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5666/0633/files/soteduripaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7966/3765/files/scope_of_employee_retention_project_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0532/0088/files/15202420918.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9660/2779/files/activity_based_learning_thesis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8681/4109/files/govomogojila.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2750/4024/files/definicion_de_metales_alcalinos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5430/8245/files/viladabenexigax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0386/2440/files/riwonuzopedege.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1740/3559/files/sea_of_thieves_review_game_informer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0332/2261/files/lexolokosezoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7299/4971/files/volap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5036/0232/files/76161190198.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9699/8041/files/dojuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6438/5951/files/62282719726.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007221.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7221 5696 bytes
SHA-256: e1c76a6f1ef679911f71383f4736de793b3633f607b84f4e5d8817e3b9461cb8
font_01_sfnt_off0000857c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x857C 10128 bytes
SHA-256: 5e379d3d3b99df3d30c7391b404ee40bae5ab690fc59db1b8a075040f60c74cc
font_02_sfnt_off0000a82e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA82E 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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