Malicious PDF — malware analysis report

Static analysis result for SHA-256 154d8887ebbd01b3…

MALICIOUS

PDF

55.4 KB Created: 2020-07-30 06:16:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b26a19358b009daa80931e4a15ee88d8 SHA-1: a5f3e75892e6bc50165193de8e8753c3cf9fcff2 SHA-256: 154d8887ebbd01b3c1771088cee37fc448d4ec8bd23e8a438381e0a032a2c2cb
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a redirector service (ttraff.com) that is flagged as malicious. The document body text, though heavily obfuscated, appears to be a lure related to disciplinary records. The presence of a link farm heuristic further suggests an attempt to drive traffic to malicious sites.

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=antecedentes+disciplinarios+policia+pdf In PDF document text
    • http://files.drchensacupuncture.com/uploads/1/3/1/3/131398473/dulasevoketojavotu.pdfIn PDF document text
    • http://files.crystalsandmoregalore.com.au/uploads/1/3/1/8/131858661/3973112.pdfIn PDF document text
    • http://files.clarevet.com/uploads/1/3/0/7/130738814/6baf8b64a8319.pdfIn PDF document text
    • http://files.cliokirkman.com/uploads/1/3/1/4/131482999/6bd8c11.pdfIn PDF document text
    • http://files.rosegoldrecords.com/uploads/1/3/2/8/132816041/4855756.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/1/0432/8315/3056/files/rinoza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2624/9885/files/lorinanojomed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3580/4319/files/jurekofeledutavon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8127/7342/files/gupozowerezutiwotilafod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6807/0824/files/99215621659.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0455/1590/files/35011480768.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9424/4516/files/taxajetutepamogelugizeje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8299/8170/files/96448799398.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6658/0382/files/jozigonaxedobisiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4044/0471/files/15945357437.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1116/8664/files/vufowi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2359/6693/files/30786425645.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007768.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7768 4928 bytes
SHA-256: e4d479e6929e02a6e9378eb8109f2be374c9bb8ece1d6ec9fe9c20709d0056d2
font_01_sfnt_off0000882d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x882D 16424 bytes
SHA-256: 6257f3b4a51fee07bbdc7a0103edb82f984f2f1abac9b7738aff1e2248fe652d
font_02_sfnt_off0000b8a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB8A6 16204 bytes
SHA-256: 541fa2b6826b0add99b7d5a173ef1e6a5567607b5192f75b810eb17d6a563501