Malicious PDF — malware analysis report

Static analysis result for SHA-256 811a6551bd016b85…

MALICIOUS

PDF

35.1 KB Created: 2020-09-17 08:28:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f07d449e555e1acff8fa7ef77543131c SHA-1: ccab9bfd1c43baeb599e5a58d3e9712b6cf7a708 SHA-256: 811a6551bd016b85e959110a81a7f33ed2d3e9fba6a5559387d795f5b54b75ba
194 Risk Score

Malware Insights

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

The PDF contains multiple links to redirector infrastructure, including one that leads to 'ttraff.club', which is flagged as a malicious redirector. The document body, though heavily obfuscated, contains similar URLs, suggesting an attempt to disguise a phishing or malware distribution lure. The presence of numerous PDF links to external sites further indicates a link farm or redirection scheme designed to lead users to malicious content.

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.club/pify?keyword=air+force+survival+knife+kydex+sheath In PDF document text
    • http://romipa.panolabearcats.org/uploads/1/3/0/7/130740441/4200199.pdfIn PDF document text
    • http://dupovo.spikemclarrity.com/uploads/1/3/0/7/130738948/muxujerimimenoga.pdfIn PDF document text
    • http://files.lakemerrittoneness.org/uploads/1/3/2/3/132303163/1232648.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/1/0431/4460/9943/files/paxune.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1062/9532/files/5999849821.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6263/1326/files/3042660442.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9352/4634/files/xilowodedunemizujewadasot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5767/5421/files/johor_bahru_cafe_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1633/0152/files/fagomujakejewanuriwi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0982/7231/files/18217955181.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8792/1313/files/nudojemonasilubefijuba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3757/0710/files/nelson_textbook_grade_6_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0634/4868/files/79458072839.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3799/0805/files/curious_case_of_benjamin_button_screenplay.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_off00004a7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A7E 5392 bytes
SHA-256: 205a58e0207e2c0453f5ea3f36ab57c2239267c192193022ddb54294f45e16b3
font_01_sfnt_off00005ce2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CE2 10252 bytes
SHA-256: 2aefa7f80adae822b8873d30ffcf93ef59b9157a26153b88c8afcb9731451d44

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