Malicious PDF — malware analysis report

Static analysis result for SHA-256 83206eb2284a5567…

MALICIOUS

PDF

36.9 KB Created: 2020-08-21 23:17:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 39177908fec83843c4452d128d0f02b8 SHA-1: 6f4774b2d460356a00e5f19aed74c87e1f2541f6 SHA-256: 83206eb2284a5567b9754ecd011c3e9755e445adafe9413b74e25f93bc3202ed
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a redirector service (ttraff.ru) known for malicious activity. The document body and heuristics indicate a "free download" lure, likely a phishing attempt to redirect users to malicious content. No scripts were extracted, but the PDF structure itself facilitates the redirection.

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.ru/pify?keyword=buss+it+down+mp4 In PDF document text
    • http://files.lyndolkeith.info/uploads/1/3/1/4/131483147/zolavepibawova.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/1/0428/3321/5644/files/telosadekoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7909/7758/files/energias_renovables_en_el_mundo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0316/6372/files/18440798758.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0591/9903/files/11889020470.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5797/0329/files/63238744631.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6482/8838/files/zafedixebutavodeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4433/8838/files/english_language_proficiency_books.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6601/3349/files/dialectical_behaviour_therapy_techniques.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nozawilod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1910/6461/files/playing_god_paramore.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_off000043a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x43A6 4760 bytes
SHA-256: 2fa22705e932a5d49df192bc7fb8a005e7ef4bc466a526cd9d76016e4c8de98e
font_01_sfnt_off000053d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53D3 11492 bytes
SHA-256: 773cb53661c6b76c871d169b0104cdbd6c711de583362a4226696508ac7ce850
font_02_sfnt_off00007943.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7943 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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