Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c7994ff3b9f2afd…

MALICIOUS

PDF

62.3 KB Created: 2020-08-24 18:30:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: de1f0aefd3db1ce961ffbe5549143848 SHA-1: d24c9ea763f2fb5c845cde7a5ecdfad1a17f3414 SHA-256: 9c7994ff3b9f2afd734bd49c6a53a5ad0dc657483b6d7a37e3838853148faa5f
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link redirects to a known malicious domain via ttraff.cc. This suggests a link farm or redirection tactic to obscure the final malicious destination. The ML classifier also strongly indicated maliciousness. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of the exact lure.

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=ffxv+comrades+bahamut+guide In PDF document text
    • http://kibapa.artfix.info/uploads/1/3/1/8/131871449/gixenovemafawu_runowajen.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/1/0431/1462/7234/files/anna_karenina_deutsch_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6249/2324/files/substitution_effect_in_economics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1037/5325/files/kojalu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/0331/4080/files/list_of_former_brisbane_broncos_players.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5785/7187/files/cateterismo_vescicale_ginnastica_vescicale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/3407/0440/files/82462012808.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0646/6976/files/71805124794.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4977/7312/files/introduction_to_business_management_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5641/4363/files/65426240098.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2201/4871/files/8714698555.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 1

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008b50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B50 4368 bytes
SHA-256: 3aacdd1990b728017426bb0ad5264675ec406944c710a496eec1f1def137c167
font_01_sfnt_off00009a9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A9C 5628 bytes
SHA-256: d3a2d0488f3603ddbf9c1fda42b835785a6323ec8cc24eaf39945e6d99f6b88f
font_02_sfnt_off0000ada5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xADA5 10692 bytes
SHA-256: efc5c80dd6a38b0d3ec9272809ffa9d20d0344891f2ae8e3b554c1be7482b438
font_03_sfnt_off0000d269.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD269 16688 bytes
SHA-256: 6edeaac0ffe194bd0f5395f3375702d34dc51809c0f9248ea8594f6d10499dcf

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