Malicious PDF — malware analysis report

Static analysis result for SHA-256 6bd18f1ad29f283a…

MALICIOUS

PDF

40.9 KB Created: 2020-08-30 21:39:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c54751ca12fde1cb9bcd836f9aa2cacb SHA-1: a2ad56fc4418b3b84d61a735746f231d81a3ca01 SHA-256: 6bd18f1ad29f283a88dd6101e6d3b0baf9a84148ae029cd405c29682ceca576e
154 Risk Score

Malware Insights

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

This PDF file contains a large number of embedded links, many of which point to a redirector service. The document body, though heavily obfuscated, contains a URL that leads to a malicious redirector. This suggests the document is designed to trick users into visiting malicious websites, likely for phishing or malware distribution.

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/wix?keyword=best+way+to+farm+death%2527+s+breath
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/b8c837_aa1d48ee2241479585c769cc68060bd9.pdf
    • https://static.usrfiles.com/ugd/b8c837_ca8b31c9d3a34512a3594702ac7bedb0.pdf
    • https://static.usrfiles.com/ugd/b8c837_17821927c5e34fd98c198a30765cdcdf.pdf
    • https://static.usrfiles.com/ugd/b8c837_3b48bc90b04548f5aeea4302140446c2.pdf
    • https://static.usrfiles.com/ugd/b8c837_a90d8664a6a343a29c12e1403f3a203a.pdf
    • https://static.usrfiles.com/ugd/b8c837_0d8436ad9bda4c979a9746fd029b3be9.pdf
    • https://static.usrfiles.com/ugd/5af86b_afa825715f274e3c9c7b734b87281330.pdf
    • https://cdn.shopify.com/s/files/1/0428/2449/9367/files/zilixaxelomototonutekore.pdf
    • https://cdn.shopify.com/s/files/1/0430/8988/7396/files/dadumigopawodilabilamudin.pdf
    • https://cdn.shopify.com/s/files/1/0430/3152/7577/files/likasedaninejerinaluz.pdf
    • https://cdn.shopify.com/s/files/1/0435/7518/1471/files/suwarowonupiju.pdf
    • https://cdn.shopify.com/s/files/1/0431/5571/8298/files/2007_toyota_tundra_tailgate_parts.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/15138334831.pdf
    • https://cdn.shopify.com/s/files/1/0431/6410/6909/files/nozegosozavomotiso.pdf
    • https://cdn.shopify.com/s/files/1/0427/9812/1119/files/dedenabojewumizevu.pdf
    • https://cdn.shopify.com/s/files/1/0431/7632/9373/files/39111759633.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_off00005fc7.bin
11cfe970c2753caa92def4b373e756abef7adcd671883b72be65e260b167ca1f
pdf-font-stream PDF embedded font (sfnt) at offset 0x5FC7 5532 bytes
font_01_sfnt_off0000728e.bin
ab60109e99a034803e90aa66ab39091562c4c24adcec738bd73d7fa0ffb782a6
pdf-font-stream PDF embedded font (sfnt) at offset 0x728E 11052 bytes