Malicious PDF — malware analysis report

Static analysis result for SHA-256 dbcfdc89da6beb28…

MALICIOUS

PDF

49.6 KB Created: 2020-07-27 09:24:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 41b36cc2cf5ec833090cad96b01ed00d SHA-1: fce6857508beec0b1fdd5bfc695a3f1301ad7ee3 SHA-256: dbcfdc89da6beb28cf46b78d9a7254776435b6e526e743d79b8cf5c24857c3fc
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of external links, with one heuristic specifically identifying it as a 'PDF SEO Link Farm'. The primary malicious link redirects to 'ttraff.ru', which is flagged as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'autograph movie songs free', suggesting a lure to attract clicks to these links. No scripts were extracted, but the link farm and redirector heuristics strongly indicate a malicious intent to drive traffic to harmful sites.

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=autograph+movie+songs+free In PDF document text
    • http://files.renatalynn.com/uploads/1/3/2/7/132710592/95460bc.pdfIn PDF document text
    • http://files.ourdivecenter.com/uploads/1/3/1/4/131407135/6359097.pdfIn PDF document text
    • http://files.kristamasonyogafitness.com/uploads/1/3/1/1/131164023/5788931.pdfIn PDF document text
    • https:///https:///httpsIn 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/1/0434/2949/4936/files/sixole.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0318/3258/files/29247708940.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8105/6935/files/18006559820.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9200/0406/files/54742249418.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9417/8982/files/55891764274.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1641/3607/files/17104662125.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7673/0533/files/naxezekako.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5219/6249/files/55694952489.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4291/3955/files/37794058822.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6984/9246/files/lunid.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_off00008241.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8241 5216 bytes
SHA-256: 802cad4efe5ce2695f66ac4b381285912744c6c2e9d52a361cfd5b31ee9dfda9
font_01_sfnt_off000093e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93E3 11676 bytes
SHA-256: d0c0682e46aae4aac48d680a15a2b070d73d9f44f1d3565ca86b61ede40b9415

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