Malicious PDF — malware analysis report

Static analysis result for SHA-256 acf3122e9fdfd1dd…

MALICIOUS

PDF

42.2 KB Created: 2020-08-17 01:11:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cd60d3a9e1b1f8f7f497199146a20e58 SHA-1: 5c02227cad80f6a318b4a9b078a7cebd870c5684 SHA-256: acf3122e9fdfd1ddaf01e4d0d86afb46f7b513f72fd8d4036ffb2ff6f8005309
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a mass external link farm, with many links pointing to Shopify domains and one critical link to a known malicious redirector at 'ttraff.cc'. This redirector is used to deliver a lure for a 'video cutter app apk for pc'. The ML classifier strongly supports the malicious verdict. No scripts were extracted, but the primary attack vector is the malicious 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.cc/pify?keyword=video+cutter+app++apk+for+pc In PDF document text
    • http://files.ivyshi.org/uploads/1/3/2/3/132302892/10d45f6e.pdfIn PDF document text
    • http://files.jdrfshootinforacure.com/uploads/1/3/0/7/130739415/8182737.pdfIn PDF document text
    • http://files.rwtcownerstribune.com/uploads/1/3/1/4/131482968/zafumineluxibef.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/1/0430/2071/4137/files/mavavexojagotixale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8705/0390/files/69559342267.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5543/0309/files/53919495223.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4071/7472/files/jorinugujomemo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7748/4196/files/cable_one_tv_guide_bilox_ms.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2261/3669/files/40701210412.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3765/4178/files/81073664155.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4188/8155/files/giboxuxaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6088/7705/files/67294172734.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1769/9477/files/50699434444.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3815/4650/files/89553626584.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3644/1767/files/guvasepovon.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 4

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_off00006754.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6754 4968 bytes
SHA-256: 14d16e92521ea25622649b53398255e0df8ff8baaa54e20232dce9568c7abac5
font_01_sfnt_off0000784e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x784E 10420 bytes
SHA-256: eac01e918b8c313d3570d347ad12f927fad3845db915b23b202ae531a9833fca

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