Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca4a96160e8c09a5…

MALICIOUS

PDF

39.3 KB Created: 2020-08-25 00:13:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1573b0f719c0b82d39cbc6164c6aa50b SHA-1: 2aebcc0a6dc366aa61e4cb589f2a2d8acf0b15a6 SHA-256: ca4a96160e8c09a54bb042858262fcbec3e356c9ea6b5a673ef0cd514d4cb690
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-in T1059.001 PowerShell

The PDF contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is likely the primary malicious payload delivery mechanism. The ML classifier strongly supports the malicious verdict. No scripts were extracted, and the document body is heavily obfuscated, but the presence of the malicious redirector is sufficient evidence for a high confidence assessment.

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=bollywood+movies+2015+video+songs++hd In PDF document text
    • http://files.thetravelingtacos.com/uploads/1/3/2/8/132814415/8763980.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/1/0437/6775/8999/files/govula.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8451/3440/files/xapilirotux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7165/8389/files/robasepapuzes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2562/0374/files/givej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5884/0223/files/digestive_system_of_human_in_urdu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5072/1699/files/29221074022.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7599/3764/files/bupuvisekoxowukuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0454/6107/8174/files/dufakoziponu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7513/3859/files/13025716428.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1034/2563/files/83353969364.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3365/7507/files/asoka_movie_moviescounter.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000056e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x56E7 5684 bytes
SHA-256: c250a6367d4c903c32ce5ca6035a02c9e96756c12b4393c1a273f2ba5f0386fd
font_01_sfnt_off00006a4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A4C 11216 bytes
SHA-256: 4e04b9f65a24c1c4b3a12f3cfc519f11bb455aa726ba7d666c0228e73fc2cb0b

Open this report in the interactive analyzer, or submit your own file for analysis.