Malicious PDF — malware analysis report

Static analysis result for SHA-256 88946a832f51222f…

MALICIOUS

PDF

48.0 KB Created: 2020-08-23 15:48:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 488cd47f28f4d8438bbb325cd8771756 SHA-1: 2bf9d99a0a5b158d7a754bd2cdddf3c537335a23 SHA-256: 88946a832f51222fb54034eb127e430da5ff6ed1dbe57ec7874ed45d6fa2afa4
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a known malicious infrastructure, disguised as a "Christmas party invitation free templates" lure. This infrastructure then leads to a large number of other PDF files hosted on Shopify, suggesting an SEO link farm or a similar content-manipulation scheme. The ML classifier strongly indicated maliciousness, and the PDF structure itself points to a redirection attack.

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.com/pify?keyword=christmas+party+invitation+free+templates In PDF document text
    • http://files.cheekycherubscommunitylearningcentre.org/uploads/1/3/1/4/131483266/vepulav.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/1/0432/8266/1526/files/72388987508.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2571/0756/files/tipifexogegemalotilakim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8120/3861/files/xugezos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6127/8870/files/17478571245.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5934/7618/files/43453358159.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2651/4077/files/44148270330.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0916/2907/files/action_movies_website.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pekazojifedabefotekufof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1353/0019/files/94113516335.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8986/0510/files/adepta_sororitas_codex_7th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/3286/0056/files/fijixovipuwilap.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 1

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_off00007e87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E87 5208 bytes
SHA-256: 625b3e7dd16b23a56dcd95e49cba61994c2a6f180176218f19616c498a5ae3e2
font_01_sfnt_off00009026.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9026 10344 bytes
SHA-256: c73cddc86f5ee32885d18f99076e84f711e41753ffb685555dffa220110d463d

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