Malicious PDF — malware analysis report

Static analysis result for SHA-256 f74d7d81895fc254…

MALICIOUS

PDF

41.9 KB Created: 2020-08-21 19:29:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 153a8f07dc16a56dda925a899bcf65a0 SHA-1: cb8913721f99587a7893a3de22dda8e995bcbb64 SHA-256: f74d7d81895fc25489916a56f9403d1ab17309cc429d791eae3d28bd6e8c841b
194 Risk Score

Malware Insights

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

The PDF contains a mass of external links, with one critical link pointing to a known malicious redirector. The document body, though obfuscated, contains the URL 'https://ttraff.com/pify?keyword=bibliography+format+apa', which is a strong indicator of a phishing or scam attempt. The ML classifier also strongly flagged this PDF as malicious. The primary attack vector appears to be luring the user to click on the malicious link.

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=bibliography+format+apa In PDF document text
    • http://files.artflockstudio.com/uploads/1/3/1/4/131437504/lewunoke.pdfIn PDF document text
    • http://files.eedstanzania.org/uploads/1/3/1/8/131857334/rosijejud_xewujitamupa_dotadelaresevuv.pdfIn PDF document text
    • http://limujite.dronezm.com/uploads/1/3/0/7/130776644/muzil.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/1/0430/8713/4882/files/siluvajavigoxupo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4071/0566/files/pharmaceutical_quality_control_and_quality_assurance.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/bafewemuwidizisaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8999/2605/files/54672133292.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7442/7806/files/pufasape.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7675/4344/files/crossword_puzzle_answer_meaning.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4121/6929/files/diritavasuvudubamunoxuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2653/5832/files/guwevumizidinovupodi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7247/1718/files/lipazipumomopipegutumilu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2746/2301/files/coming_soon_vector.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6325/4944/files/best_employee_award_certificate_format.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4398/7361/files/weather_radar_canton_ga.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 6

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_off0000677b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x677B 5428 bytes
SHA-256: e251db74ff5c92fca90c41879c8117835d1cf0971e390f031c7ce86456bb6d5e
font_01_sfnt_off000079d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79D0 9660 bytes
SHA-256: 5976cff0b91300e65e718c4fd2cb9f31ee0f852d46a2d8aeb1be8283e43b66f7

Open this report in the interactive analyzer, or submit your own file for analysis.