Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fba55a1c8bd45cd…

MALICIOUS

PDF

64.9 KB Created: 2020-08-10 14:47:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5ee9fe5fea4fca0812e2b31c32e9cdc0 SHA-1: 7123c81cb8d02eb3faab47d019797ab37ea89216 SHA-256: 9fba55a1c8bd45cdc82acbde1545877f4445f5e6e9d527109ff0b8d91ea4fa20
194 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, directing users to `https://ttraff.cc/pify?keyword=alopecia+types+pdf`. It also contains a PDF link farm heuristic, with numerous links pointing to PDF files hosted on Shopify. The document body, though heavily obfuscated, contains the same malicious URL and a benign-looking PDF URL, suggesting a lure to trick users into clicking the malicious link. No scripts were extracted from this sample.

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=alopecia+types+pdf In PDF document text
    • http://files.quantumpoint.org/uploads/1/3/0/8/130874031/fexurugomaseba_livorejalolokib_kuluvewowa.pdfIn PDF document text
    • http://bitemuba.jesspurtellyoga.com/uploads/1/3/1/3/131380183/kugapipegine.pdfIn PDF document text
    • http://wanixud.strathendrickrc.co.uk/uploads/1/3/1/3/131380042/weleg.pdfIn PDF document text
    • http://sesupow.runnerstoke.com/uploads/1/3/0/9/130969352/1925629.pdfIn PDF document text
    • http://files.foxoildrilling.com/uploads/1/3/1/3/131398560/ab2a0.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/1/0433/0687/7080/files/nezax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4211/1650/files/38020448529.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6869/4423/files/pusufopasunonavilil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4570/0262/files/verizon_inhome_agent.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2511/0952/files/ataxia_telangiectasia_review.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4055/5676/files/animal_bikes_mod_1._7._10.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0704/9887/files/65840466657.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3325/6345/files/wojow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7644/2519/files/fepulo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8180/1629/files/84512078302.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3333/7768/files/wokexuzunulet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1143/1838/files/custom_pokemon_trainer_sprites.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/66656561998.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zosakasebiribo.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000baab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBAAB 5144 bytes
SHA-256: bb02629133af078a39d0c8ddfa27476585cce298e7dde083b5ee4f92dc3d1c63
font_01_sfnt_off0000cc46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC46 12388 bytes
SHA-256: 0543f32a8007280e8471be0f8dc646bcb29c45277c544b8a2423a378288a8635