Malicious PDF — malware analysis report

Static analysis result for SHA-256 85bf73ca936e006d…

MALICIOUS

PDF

31.7 KB Created: 2020-08-21 01:59:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d7e9f9eb397878e1304e4e9741bcabef SHA-1: 23a56377e5cb6688c0c0923125f5f458184cce7d SHA-256: 85bf73ca936e006df3f0d1e309306be89abc5f367b4e7c38e9f4ffb443a7b71d
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service (ttraff.com) which is flagged as malicious. The document body, though heavily obfuscated, contains the same redirector URL, suggesting a phishing or scam lure. The presence of multiple PDF links, including those hosted on Shopify, indicates a link farm designed to distribute malicious content or phish for credentials.

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=bahubali+2+wallpaper+full+hd In PDF document text
    • http://raxigasi.sdcecd.com/uploads/1/3/0/7/130775164/c4489e32a5ae.pdfIn PDF document text
    • http://files.topsailrigging.com/uploads/1/3/0/8/130815095/2021793.pdfIn PDF document text
    • http://mired.pickphysics.com/uploads/1/3/0/7/130775027/rikagajonedew_wuberifekez_lejimikepusep_durab.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/1/0439/2094/9403/files/definition_of_sports_psychology.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9726/7112/files/laravel_html_to_package.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7831/2355/files/gosivuxevurutoner.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1393/0142/files/natotiwinezodoxazawubibi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0524/6631/files/lupedopixopetugamatike.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3600/0931/files/70346444346.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7955/7539/files/9450338440.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4976/3494/files/fazomemugeza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2438/4154/files/long_sleeve_t_shirt_template_design.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8554/5124/files/6742653845.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0654/7352/files/15843261714.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 3

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_off00004109.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4109 5364 bytes
SHA-256: 4a9770f7d73ba48aceb68b940abda15b3a3d6e6cefd1ddcd50b041cebee1258d
font_01_sfnt_off00005354.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5354 9068 bytes
SHA-256: 84e5f4f1a36e6673c0dd18fdc5f54a4b09912320f4b01d33029beddf5b78993a

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