Malicious PDF — malware analysis report

Static analysis result for SHA-256 20afbd7b71066c00…

MALICIOUS

PDF

45.8 KB Created: 2020-08-10 20:51:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 030f67b3c6ec48f6765c41fb9d1bda67 SHA-1: 4a091d2e32b37946ca55d5f980f65bab8eb7ec20 SHA-256: 20afbd7b71066c003dfcf11067bbf180e4c5fee3039d5ee08a0fc7a1c1df6c14
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links, many of which point to benign Shopify domains, but one critical link redirects to known malicious infrastructure at 'ttraff.cc'. This suggests a link farm or SEO poisoning tactic to distribute malicious content. The ML classifier strongly flagged this PDF as malicious, and the presence of a redirector URL confirms a malicious intent to lead the user to a harmful 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.cc/pify?keyword=bronchial+asthma+in+pregnancy+pdf In PDF document text
    • http://files.charishomes.com/uploads/1/3/2/7/132710601/6545090.pdfIn PDF document text
    • http://files.childrensartlab.com/uploads/1/3/0/8/130813827/5194585.pdfIn PDF document text
    • http://files.nectrathletics.com/uploads/1/3/0/9/130968962/820645.pdfIn PDF document text
    • http://files.corvetteslimited.com/uploads/1/3/1/4/131406717/demib.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/1/0438/4777/8469/files/anna_and_the_french_kiss.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7143/1065/files/47202860203.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2358/0830/files/665013479.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5756/9176/files/wimuseridodisuvedebibefol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3815/4653/files/8262132220.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8511/0177/files/93573175769.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4283/0496/files/gewibubiseb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2571/0756/files/24371194559.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9856/1957/files/antenna_and_wave_propagation_book_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9254/8515/files/a_history_of_anthropological_theory.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3057/6295/files/gokepadotima.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_off00007516.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7516 5720 bytes
SHA-256: 588e5473bd7fc7fed6f15f349a86ab596b6a43fde028a02d99f0b91de5fcd0ca
font_01_sfnt_off00008860.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8860 10000 bytes
SHA-256: 1d6757ea7a6027e0d2c1002bb9dd9f8452b31eb6ff2944aa416506ddded9037c

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