Malicious PDF — malware analysis report

Static analysis result for SHA-256 d95e8789f0d5a396…

MALICIOUS

PDF

41.5 KB Created: 2020-11-01 22:02:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7115ce80003dc15547be1c0928dce4b2 SHA-1: e431dab4eebba139c54448fa6448ae4d8825e16c SHA-256: d95e8789f0d5a396cb8303900e80aa89c5a2d8d1ed11706ff734e41e397ea4f4
154 Risk Score

Malware Insights

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

The PDF file contains embedded links that point to known malicious redirector infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, appears to be a lure related to a vehicle owner's manual. The PDF_SEO_LINK_FARM heuristic further suggests a large number of outbound links, likely for SEO manipulation or to distribute malicious content. No scripts were extracted, but the presence of malicious links is a strong indicator of a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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://gettraff.ru/aws?keyword=2018+toyota+rav4+hybrid+owners+manual+pdf
    • https://cdn-cms.f-static.net/uploads/4382194/normal_5f917458f38c8.pdf
    • https://mibebedobosuv.weebly.com/uploads/1/3/4/3/134322580/madute-bidaretotikeb.pdf
    • https://mejefarekobuk.weebly.com/uploads/1/3/4/3/134338461/jobejixot.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0505/0341/8026/files/figovaguna.pdf
    • https://uploads.strikinglycdn.com/files/52042d6a-5aa4-4432-a14d-956b8f6a8fd5/72092702790.pdf
    • https://uploads.strikinglycdn.com/files/7c02360d-ab5a-4748-8fa0-7fad7ae76505/1996_rockwood_pop_up_camper.pdf
    • https://uploads.strikinglycdn.com/files/e6a692c1-1e73-4942-b639-19517e4753e4/newuzaxadosezukojazepudow.pdf
    • https://uploads.strikinglycdn.com/files/1c148dfc-84e2-4a2e-bc0b-39cc1649f239/bolob.pdf
    • https://cdn.shopify.com/s/files/1/0504/2910/0230/files/this_egg_shimmers_like_gold.pdf
    • https://uploads.strikinglycdn.com/files/8bfd0b82-20b3-47e9-81e9-44ca4e9ae1a9/24735778174.pdf
    • https://cdn.shopify.com/s/files/1/0430/8611/9079/files/tofiburexowaki.pdf
    • https://uploads.strikinglycdn.com/files/8949c41a-9db9-436b-b1bc-fa87918f9fa8/beowulf_crossword_1_answer_key.pdf
    • https://uploads.strikinglycdn.com/files/4fd33f29-db61-43c8-b40e-68db99f92271/tusiger.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005eeb.bin
6283067a0874a550607b614da87831471bde9425cea2a387db9f49ba894af357		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EEB 6188 bytes
font_01_sfnt_off000073ec.bin
185721669a0e7dca941ae20b67eef8d3ea3899bb34bbf041efd6b14dec7ea186		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73EC 10820 bytes

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