Malicious PDF — malware analysis report

Static analysis result for SHA-256 13860e9f1e7c1c88…

MALICIOUS

PDF

46.5 KB Created: 2020-08-13 23:58:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b192bc28993e0cc709fef728a85f893c SHA-1: 99d0485dc86d1ef0fface4294e50224db87802b5 SHA-256: 13860e9f1e7c1c8856ca1bcc37239c36d0d4c5e31fb09c8b6e078c988b86c1b8
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a redirector service (ttraff.com) that is flagged as malicious. The document body text, though heavily obfuscated, contains keywords related to 'Hubspot sales software certification exam answers 2019', suggesting a lure to trick users into clicking the malicious links. The presence of a large number of external PDF links, many pointing to benign Shopify domains, indicates a link farm strategy to improve SEO for 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.com/pify?keyword=hubspot+sales+software+certification+exam+answers+2019 In PDF document text
    • http://buzetojut.teresamummert.com/uploads/1/3/1/3/131382274/1706775.pdfIn PDF document text
    • http://zajanu.benefitplans.org/uploads/1/3/1/4/131411150/pigiwumifasofa_pafojini.pdfIn PDF document text
    • http://dozone.innovativesheets.com/uploads/1/3/0/7/130738848/a87b877.pdfIn PDF document text
    • http://files.finalfinishdetailing.com/uploads/1/3/2/7/132710655/levin_linebedanelu_vidaki_vukadidi.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/1/0431/1564/3031/files/tumosikelozagarame.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4496/9367/files/12685810005.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6112/5025/files/turapuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2150/8506/files/1925953076.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/0253/8647/files/weguxuxibatawudada.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6432/8345/files/aithihyamala_malayalam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5011/4965/files/45474406482.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4061/8134/files/boiler_water_testing.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4423/9510/files/22142951173.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3057/6285/files/rilixuvajonanore.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8044/1238/files/91888770278.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8967/3883/files/13434925604.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/97454987384.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 8

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_off00007582.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7582 5904 bytes
SHA-256: 7afa7e0a8d57cb30b002236143b3f7d3a0660eb6fe9ad92c74a1a8cbd0ed029e
font_01_sfnt_off00008990.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8990 10448 bytes
SHA-256: 8a12df941b4f428a061e7f2bd50a396cf1fdec92c524187a71e6ae3190b0e43f

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