Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b44d5fd9a22ead0…

MALICIOUS

PDF

53.8 KB Created: 2020-08-04 19:04:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 55aa25334bc94d0f5f01d761dc9364fc SHA-1: f2d0dc99832c1eb6ae3bc424c6b56c22475b0262 SHA-256: 7b44d5fd9a22ead010fa1220d72261ecab4db54320f779545e28f3888971c9e8
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm designed to redirect users to malicious infrastructure, specifically identified by the 'ttraff.cc' redirector. This indicates a phishing or scam attempt, likely disguised as a free download. The ML classifier strongly supports the malicious verdict.

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.cc/pify?keyword=maria+west+side+story+original+key+pdf In PDF document text
    • http://files.madlyeclectic.com/uploads/1/3/1/4/131483253/nuwitoduku_xafozovininu_lekilirox_navagad.pdfIn PDF document text
    • http://files.faloonaagency.com/uploads/1/3/1/4/131437283/nikiwubobelo-mosunonelu.pdfIn PDF document text
    • http://files.the-trilinq-sg.com/uploads/1/3/0/7/130739704/zidemevibel.pdfIn PDF document text
    • http://files.centrocha.org/uploads/1/3/0/8/130873870/7918256.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/1/0430/3355/9203/files/bikatapafitesilumasak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1161/2578/files/52120250704.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2439/2087/files/mepexesazu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9204/2137/files/jotumige.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8071/1325/files/sasenesozukud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8492/3555/files/bonurolobeset.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8570/1019/files/kizizujufifazezaxek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3667/2162/files/61583988088.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1692/6870/files/bawir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8068/6497/files/vofamivogigirixafarolot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4363/5879/files/44822475647.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_off0000940e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x940E 5472 bytes
SHA-256: a7dd5af2325fafc14bff2a5db09e20978994206af6a93cf7155685b91c056b8b
font_01_sfnt_off0000a6e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA6E5 10700 bytes
SHA-256: 76e2c42c19f41bdef996022dc3eae9c6758f216dfa13e5fc30b84ad37dd49af8

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