Malicious PDF — malware analysis report

Static analysis result for SHA-256 d91426aca196560b…

MALICIOUS

PDF

36.5 KB Created: 2020-08-23 20:25:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: aeea5509775730dbf6e9897099708a99 SHA-1: 8f36fcff3b6514f9d49dc12df7ea875baf0f7eca SHA-256: d91426aca196560b58559c8d4ff7d6d5e80b1871e29af7d8666ae2ce1257dcba
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com'. It also exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on Shopify. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=eramet+annual+report+2018', suggesting a lure to a malicious site disguised as a report. No scripts were extracted, but the presence of a malicious redirector and link farm indicates a phishing or malware distribution attempt.

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=eramet+annual+report+2018 In PDF document text
    • http://files.m.kaltydesigns.com/uploads/1/3/1/4/131438282/5388253.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/1/0430/7386/3842/files/41927228069.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4705/0661/files/blue_water_bridge_wait_times.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7917/2257/files/the_complete_dlab_study_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3018/4087/files/cursive_templates_for_word.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2586/4603/files/chinese_english_visual_bilingual_dictionary.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0808/9509/files/cms_screening_colonoscopy_guidelines.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3835/0231/files/staff_attendance_management_system.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4895/0170/files/saxibefo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2860/3295/files/mathematics_for_management_and_finance.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000528a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x528A 5264 bytes
SHA-256: a03ddff99cc299f28582d002ab35694ab72b8e47574d47db8f52d20259a9415c
font_01_sfnt_off00006454.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6454 9804 bytes
SHA-256: ebfe8c2224e2db0a2ff3f2b8de771edf23c19e7f22aa8063e076b936dbfb9e2a

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