Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d436802dbd3c9ba…

MALICIOUS

PDF

43.3 KB Created: 2020-08-19 22:29:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fdc858e80b127256c06b01eecdbc684c SHA-1: 193f9a635bd11b80f64985adb5465ba51e570776 SHA-256: 9d436802dbd3c9baebbf23c2ec8bf3c18f341bd0222ea5808337b8667c7cfc13
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is likely used to distribute further malware. The document body also contains a large number of embedded URLs pointing to various PDF files, suggesting a link farm or SEO poisoning tactic to increase visibility and traffic to malicious sites. The ML classifier also strongly indicated maliciousness.

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=watchmen+comic+online+espa%25C3%25B1ol+pdf In PDF document text
    • http://files.mypeakperformance.net/uploads/1/3/1/6/131606069/bumumuk_savaresofobafaf_zivexizokix_tewovewo.pdfIn PDF document text
    • http://ladope.loegeringpower.com/uploads/1/3/1/6/131606552/20debc6fb3ea9.pdfIn PDF document text
    • http://waluger.csjmemorialfund.com/uploads/1/3/2/6/132696483/2882083.pdfIn PDF document text
    • http://banujopa.useddredge.net/uploads/1/3/1/1/131164110/mevuxemarepi.pdfIn PDF document text
    • http://files.lynneeast.com/uploads/1/3/2/6/132681219/8721769.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/1/0431/4251/2802/files/wewezerubolipogo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8005/5958/files/96964520179.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9731/7783/files/89010305940.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0682/7428/files/64_as_a_fraction.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5117/1478/files/english_as_a_second_language_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5294/7873/files/sebatudi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2033/6807/files/1673673365.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1918/1978/files/zulusulovamubosesurokaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wowivitotorinu.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 5

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_off00006803.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6803 5524 bytes
SHA-256: cb88466bcb5aa5165ea05032b91634d8f81b0abcdaae1a87faa75683fad06f9e
font_01_sfnt_off00007a73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A73 10584 bytes
SHA-256: d7f791d334f14cc29594b41d0edfee92547af41c7cbf9aaacfd9b5b9c171e609

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