Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab9c46ec0937913f…

MALICIOUS

PDF

41.5 KB Created: 2020-08-25 13:58:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 84318f4ea0a7755ad53a04f20a43702b SHA-1: 57e0a611a4a52685d23603da744689d02c8bac39 SHA-256: ab9c46ec0937913f9b85bc7d5d0cfc3976e55e4c7357af4e6764b50802c789b8
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. This URL is embedded within the document body, disguised as a free browser download. The document also exhibits characteristics of a link farm, with numerous embedded links to external PDFs, many hosted on 'cdn.shopify.com'. The primary malicious link is the most critical IOC, as it leads to known malicious infrastructure.

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=mozilla+firefox+pc+browser+free In PDF document text
    • http://dasomex.wheteach.org/uploads/1/3/1/3/131380598/7775880.pdfIn PDF document text
    • http://files.serenitysalonandspallc.com/uploads/1/3/1/4/131437561/kowupi.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/1/0431/2262/2621/files/spin_bowling_techniques.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8975/6311/files/zukopamejibujovuguledifu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2843/7409/files/famonimukisizodutovezof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0127/3758/files/accidentes_laborales_en_mexico.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5475/9065/files/wuzatigot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0174/1463/files/aleph_borges_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7053/7374/files/bexelubunavo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0549/2904/files/nasofewonerugirutak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4584/6168/files/wbcs_optional_math_syllabus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8222/7617/files/56474286275.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mekokagowofulagifofid.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_off00006407.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6407 5364 bytes
SHA-256: 4561f956bda33faac7aa65f9bdac811a3972a8b57f8a91e71825511044635e20
font_01_sfnt_off00007677.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7677 10208 bytes
SHA-256: 7cb89736061aae4a13c6e707852958b4d00f15f0b87c7c223acb6f432e1a6e72

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