Malicious PDF — malware analysis report

Static analysis result for SHA-256 25c847cf66925630…

MALICIOUS

PDF

51.4 KB Created: 2020-08-03 04:54:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0773b9fc11cfc5c30a531260cc48076e SHA-1: 792e5c39c33d9aad24c618378b06cc40634b928a SHA-256: 25c847cf66925630209f2f73f0ec2ad542c9110b3caa0fc495ee52b3488f97f6
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is likely intended to lead the user to a malicious site. The document also exhibits characteristics of a PDF link farm, with numerous links to external PDFs, many hosted on Shopify. The ML classifier strongly flagged this PDF as malicious. No scripts were extracted, but the presence of the malicious redirector and the link farm structure indicate a phishing or social engineering attempt.

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=a+deeper+love+inside+pdf In PDF document text
    • http://files.victoriabattagliahofmann.com/uploads/1/3/1/8/131856987/bbcda434b5a699b.pdfIn PDF document text
    • http://files.goldcoastmodelrailwayclub.com/uploads/1/3/1/4/131409098/6293913.pdfIn PDF document text
    • http://files.roxborohomeeducators.org/uploads/1/3/1/4/131406082/xadarid-burew-desugumuj-lejon.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5454/6590/files/50808137912.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3048/5912/files/11479343260.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7066/8453/files/62320821568.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4837/8280/files/bafiluxugubiwuwi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6881/6544/files/nas_is_like.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0305/2191/files/read_the_jaunt_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2644/7525/files/jawebilakilakidalirakimov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6138/7170/files/22866481515.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0101/1614/files/nuridaseverunipurizege.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7668/1882/files/fowuleginan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5913/5132/files/bobcat_troubleshooting_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2564/5224/files/nugarofixizibolidaw.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

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A9E 4584 bytes
SHA-256: 9678c4126d52ca185e1530414583312904146ebe9e80746565a073d9df7c60b6
font_01_sfnt_off00007a37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A37 10304 bytes
SHA-256: d03129e99c3f7c6b3522a119e5b78536e5d57ab82c6e7a4b00bb811d8ac1a484
font_02_sfnt_off00009da8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9DA8 16092 bytes
SHA-256: e9fe716c2abc985b12a899a49d5539e4e8be1b56d50c083b30290d85a2a7c848
font_03_sfnt_off0000b270.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB270 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333