Malicious PDF — malware analysis report

Static analysis result for SHA-256 85994ff8759d0cd6…

MALICIOUS

PDF

51.7 KB Created: 2020-08-12 02:42:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a535d1133947f60a27d105f66c7b7e07 SHA-1: acb9c071ad3fead0efc0b042154d9901a994bb05 SHA-256: 85994ff8759d0cd6fc6ee4824fdcf556b98ee01b4f606fdab99e122d05f45315
202 Risk Score

Malware Insights

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

The PDF contains numerous links, including one pointing to a known malicious redirector infrastructure at 'ttraff.com'. The document body, though heavily obfuscated, contains text related to interview questions and the malicious URL, suggesting a phishing lure. The presence of multiple external PDF links, many hosted on Shopify, indicates a link farm designed to attract search engine traffic and potentially distribute malware.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=interview+questions+for+marketing+manager+pdf In PDF document text
    • http://files.findest.eu/uploads/1/3/1/6/131606118/muxugugudarok-susekotuborodir-gedasukafumag-saxuwokug.pdfIn PDF document text
    • http://files.greatexpectationsknoxville.com/uploads/1/3/0/8/130874361/7872f5.pdfIn PDF document text
    • http://files.premierpoolnaples.com/uploads/1/3/1/0/131070238/d0e8edb4.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/1/0433/1231/6584/files/vivesizijesuvavelupa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/7952/0676/files/fedex_commercial_invoice.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4783/6065/files/42219182252.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4637/0471/files/cutaneous_anthrax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/palafasejuzanuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0032/3478/files/calentadores_solares.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8821/4171/files/asrock_z75_pro3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4133/9030/files/assassin_s_creed_ds.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9540/0349/files/free_acupressure_point_chart.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1678/8900/files/juju_hunter_potion.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3094/5693/files/cracking_the_coding_interview_189_programming_questions_and_solutions.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_off00008bb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BB5 5608 bytes
SHA-256: 7f1a1594a93ca9c964d0a618186c0569068d54dc88d7b3dc117c37522ed209f4
font_01_sfnt_off00009ec4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9EC4 10412 bytes
SHA-256: 8393dfa2159f52e744b6ffb7c171e763085aa3e955169e194e7f72df0dc56e66

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