Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f8b7084596750e6…

MALICIOUS

PDF

43.4 KB Created: 2020-08-06 21:00:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6940b8b237d447038a594164110028c7 SHA-1: 71d15e9acb753163a71c5906409ea8ec45d9e411 SHA-256: 6f8b7084596750e6c5bac2b8546e8e08e64150be67d06e06f3ec30f693aa9543
154 Risk Score

Malware Insights

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

The PDF contains a link that redirects to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body and embedded URLs suggest a lure related to technical documents, likely to trick users into clicking the malicious link. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a phishing or redirection attempt, potentially leading to further malware delivery.

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://ttraff.cc/pify?keyword=bolt+tightening+sequence+pdf
    • http://soxapu.rfcjournalism.com/uploads/1/3/2/7/132710797/vawesuko-sititirajova.pdf
    • http://files.makeyourselfageless.com/uploads/1/3/1/6/131606687/modudos.pdf
    • http://files.mondayeveningconcerts.org/uploads/1/3/1/6/131636807/7165778.pdf
    • http://files.vacationhome4u.com/uploads/1/3/2/6/132682295/kanewugosuw.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/0673/0144/files/16768415064.pdf
    • https://cdn.shopify.com/s/files/1/0433/6179/6248/files/wixilaxifizovatasakazole.pdf
    • https://cdn.shopify.com/s/files/1/0427/7541/2902/files/bebudijodexu.pdf
    • https://cdn.shopify.com/s/files/1/0430/8749/5321/files/ceat_engine_5._6._1.pdf
    • https://cdn.shopify.com/s/files/1/0448/0489/8978/files/illinois_motor_vehicle_bill_of_sale.pdf
    • https://cdn.shopify.com/s/files/1/0432/6775/2099/files/7733188816.pdf
    • https://cdn.shopify.com/s/files/1/0432/4465/0651/files/xotokimi.pdf
    • https://cdn.shopify.com/s/files/1/0427/4782/2236/files/sign_with_certificate_adobe_reader_dc.pdf
    • https://cdn.shopify.com/s/files/1/0437/7968/6549/files/nugufasizujokevovanum.pdf
    • https://cdn.shopify.com/s/files/1/0433/2044/3045/files/158552975.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_off00005f6a.bin
1a034a8b8b46d3511062014fdb876dbbbd594c412334c9c0228a3cdc94f34229
pdf-font-stream PDF embedded font (sfnt) at offset 0x5F6A 5284 bytes
font_01_sfnt_off00007167.bin
7bc0bfd49c20eba89a15cd47083be04b8b05a933a1cc3c8ce3d92f258908d941
pdf-font-stream PDF embedded font (sfnt) at offset 0x7167 14232 bytes