Malicious PDF — malware analysis report

Static analysis result for SHA-256 31d14829b98eb3bd…

MALICIOUS

PDF

38.5 KB Created: 2020-08-15 10:20:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5c9e612fcad0098edc3d6047f4d67731 SHA-1: 19b747605bb890880f3352d1d2eb0633a40fa4c0 SHA-256: 31d14829b98eb3bddd8dc8a49c1b804927d4be2c4f258e17bad7f3d3249678c7
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to benign Shopify domains, but one critical link directs to a known malicious redirector at ttraff.com. The document body, though heavily obfuscated, contains the same malicious URL, suggesting an attempt to disguise the malicious intent as a legitimate document. The presence of a link farm and a malicious redirector 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/wb?keyword=cohen%20tannoudji%20quantum%20mechanics%20vol%202%20pdf In PDF document text
    • http://files.fifthandfederal.com/uploads/1/3/1/0/131070872/xawitejivolumamilawu.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/1/0437/6972/5080/files/hp_laserjet_pro_400_mfp_m425dn_drivers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3611/4076/files/kubota_parts_diagram.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0159/3502/files/1680230414.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/2283550224.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5249/8070/files/mofogapidawizizuwo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4136/4890/files/real_estate_broker_bill_format.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8611/1137/files/73874008199.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2936/4885/files/health_education_for_dialysis_patient.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9811/9071/files/8807884747.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0505/1029/files/meporitimutejiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1922/2687/files/cambridge_latin_book_3.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
🗂 Part of campaign: serendipitygarden.ca 8 samples

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_off00005792.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5792 5600 bytes
SHA-256: a8f0f69a30cf55c0ee7383e2b9a79c7c1bd420a531f1dc9071fbc5b4441013af
font_01_sfnt_off00006a84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A84 10300 bytes
SHA-256: dd5732932cbf798377b61c4e2e46b9170137b90f04903b69d82f40407561f57e

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