Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c5772f5c3636e06…

MALICIOUS

PDF

39.4 KB Created: 2020-07-29 04:51:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 36cb5e26599ee2e48746bdc2b4fbca6f SHA-1: 90e8e0003d795d46a36f8bb93591753e6733c3cc SHA-256: 0c5772f5c3636e064a933100029bcd558d5783fee84f7db715ba4c35d8717232
162 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to redirector infrastructure like 'ttraff.com'. The ML classifier strongly indicated maliciousness, and the presence of numerous external links suggests an attempt to drive traffic to malicious sites, likely for phishing or malware distribution. No scripts were extracted, but the PDF structure itself is used to host the malicious links.

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.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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.com/pify?keyword=cid+episodes++free In PDF document text
    • http://files.taverhamdaycentre.org.uk/uploads/1/3/1/4/131408913/6a5f1.pdfIn PDF document text
    • http://files.judicheco.com/uploads/1/3/1/6/131607712/9605056.pdfIn PDF document text
    • http://files.zioncitycogic.org/uploads/1/3/1/3/131380397/dafamazonil.pdfIn PDF document text
    • http://files.twistedrootswood.com/uploads/1/3/2/6/132681337/zumagitilapo-zogodizove.pdfIn PDF document text
    • http://files.twigflowers.online/uploads/1/3/2/3/132302711/rivekexutun-wigifetugu-mamuzaxigokif.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/1/0437/6592/3997/files/xasazete.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4844/9686/files/3640430697.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5244/9444/files/buberibi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5491/6006/files/zelabaro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2476/9436/files/xevemizikoje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0201/9487/files/1958547555.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5905/2706/files/65829387473.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6874/4087/files/pixejuzewojitixora.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4490/5884/files/legojudegupavure.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3582/0185/files/zojusemuzezujoseje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9227/9445/files/80113190781.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_off0000603a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x603A 4416 bytes
SHA-256: 78548fe327d2cea9ea889156549220efad4ac10a5bbd05aadae2305c839f0486
font_01_sfnt_off00006f45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F45 9816 bytes
SHA-256: 0a1e9394f2ef406ba911081b12501c55da4c97c413549edfcbc8f121f5505132

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