Malicious PDF — malware analysis report

Static analysis result for SHA-256 21093386ba54cffb…

MALICIOUS

PDF

46.3 KB Created: 2020-07-28 12:46:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cdf7ce92e78767b773fa2efb98a8a3c5 SHA-1: a31fe838a0c9dcaa4194d59e01f321ed5dcdecfd SHA-256: 21093386ba54cffb987c099e4c40a0d9c40c56af02a7547daa10361369b7201c
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of external links, with a critical heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK pointing to ttraff.com. This suggests the document is part of a link farm or SEO manipulation scheme designed to redirect users to malicious infrastructure. While no scripts were extracted, the presence of embedded URLs and the ML classifier's high confidence indicate malicious intent.

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.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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=angular+blob++pdf In PDF document text
    • http://files.abookstudio.com/uploads/1/3/1/4/131453588/mebalepawunel.pdfIn PDF document text
    • http://files.listingagentofatl.com/uploads/1/3/1/0/131070207/72777210.pdfIn PDF document text
    • http://files.skyleslawfirm.com/uploads/1/3/0/8/130873795/e0a4e81840110.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/1/0428/3577/1558/files/ragemuguwazarakujap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/38608120386.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6627/7531/files/tuwisuwukowapibirobevoliz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3637/6214/files/52245434025.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2299/2028/files/kodulekopuro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2897/1674/files/86584787200.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5136/9127/files/gezomamukeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3916/1500/files/623399273.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0813/1233/files/lubora.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8665/2316/files/8514080327.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/4416/5016/files/7225657955.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2649/7182/files/vemokasixuwuti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0179/1132/files/texowej.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_off00007099.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7099 4796 bytes
SHA-256: 1d8aafcbf3adfa07eff4917cb4974293128121bdb8d873d3fbc85845ef9e5186
font_01_sfnt_off000080d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80D9 13268 bytes
SHA-256: 514623c231d8fad0ef3d65f1cf5bedc0adfb82853df24f6a20e39b45b033d513

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