Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b02874db20e2d13…

MALICIOUS

PDF

44.3 KB Created: 2020-08-16 00:55:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 545d5d91f41812dcb67c709372c28204 SHA-1: 143427e6d8e541e2bd12bad565fb1a624d75b305 SHA-256: 9b02874db20e2d133153861a2ce05cfb550486a4596698a447ef36ca492ef142
194 Risk Score

Malware Insights

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

The PDF file contains multiple embedded URLs, with a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL, suggesting an attempt to lure the user to malicious infrastructure. The presence of a large number of external PDF links, many hosted on Shopify, indicates a link farm strategy, likely to improve SEO for malicious content or to obscure the true destination.

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=award+ceremony+background+music In PDF document text
    • http://files.roxierosekids.com/uploads/1/3/1/0/131070483/fovegareg.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4972/2790/files/95230701753.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7428/9813/files/famokelatupafola.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8359/4917/files/cdac_entrance_exam_syllabus_for_cse.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4830/4797/files/giwalitibuzozin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3796/5979/files/29286829679.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6780/0736/files/atharva_veda_malayalam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/4294/2624/files/csf_full_form_in_computer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4942/6839/files/40827074350.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9827/4978/files/65401552955.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2348/3548/files/98379687692.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1983/7346/files/95360948941.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6871/0294/files/waltz_of_the_flowers_piano.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 1

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000624a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x624A 5416 bytes
SHA-256: 8b163a7a98b6cdc1fab4800432d74b5b56839a55bee65f6486b4905604b29031
font_01_sfnt_off0000749e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x749E 9864 bytes
SHA-256: d15ad415731a3ce02b15dd5d08dd4c174d02cf84817d9a2ad547de678010ad28
font_02_sfnt_off0000967c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x967C 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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