Malicious PDF — malware analysis report

Static analysis result for SHA-256 20386a8ae565ec31…

MALICIOUS

PDF

42.5 KB Created: 2020-08-16 01:00:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7267129d09ba246ce00b3f548d1fce73 SHA-1: a36e3665933b6f17535fd6ae35074f551121d2a3 SHA-256: 20386a8ae565ec3180285ff0fb0c4a7618a42a0137b98b0dfe748f342d2b320d
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to Shopify domains, suggesting a link farm. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is likely the primary malicious payload delivery mechanism. The document body contains garbled text but includes the malicious URL, reinforcing the link farm and redirector attack pattern.

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=batman+the+dark+knight+movie++300mb In PDF document text
    • http://files.garjones.com.au/uploads/1/3/1/4/131437319/vituferelawaze.pdfIn PDF document text
    • http://mosima.spotlitekustomaccessories.com/uploads/1/3/1/4/131482975/64a808313.pdfIn PDF document text
    • http://wibaf.cotwholesale.com/uploads/1/3/1/6/131637419/moxufovopu_zadudoda.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vexib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2651/4077/files/pdf_acrobat_reader_free_download_for_windows_7.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1310/4035/files/99621449232.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/13578549785.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9940/5979/files/gadejofaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/20745245188.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6102/6719/files/full_ielts_academic_reading_test.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5107/4214/files/75844742070.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6355/8815/files/71395141566.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6225/5006/files/38044769892.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1959/9004/files/26639180865.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000058b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58B1 5436 bytes
SHA-256: 55b4855fb4022052563cd8ced9e84eecb9da8fb772b59886eab9f5ca3ed99697
font_01_sfnt_off00006afa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AFA 10596 bytes
SHA-256: d392edb12f93093cd6488507ae6791483db39d1059cf40ff0ae334a432488c97
font_02_sfnt_off00008f4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F4B 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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