Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d7d46b59b1ae427…

MALICIOUS

PDF

38.6 KB Created: 2020-08-11 02:51:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 650244696e267322c26c46a2ac8401bb SHA-1: f4c48f3bb10b2cbb19f84d9dfe3f5ac1b74718ec SHA-256: 0d7d46b59b1ae427e9110cda66fe06354d3f4d7b79aab6dce19e8dcf40ee4b5d
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains text that suggests it is masquerading as an owner's manual to entice clicks. The presence of a malicious redirector link indicates an attempt to lead the user to a harmful site, likely for further exploitation or credential harvesting.

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.ru/wb?keyword=2018%20pacifica%20hybrid%20owners%20manual
    • http://files.cravecavevaporlounge.com/uploads/1/3/0/8/130813141/povebezaxi-zekuguzojux-surariwot-fabeli.pdf
    • http://files.lindahimbert.com/uploads/1/3/1/4/131453252/zuxaredidis-bafubama-kevijemerujepo-busavevefa.pdf
    • http://saxuxak.shopwilla.com/uploads/1/3/1/3/131379246/zojizokivaboze.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0427/8134/3900/files/engg_colleges_in_pune.pdf
    • https://cdn.shopify.com/s/files/1/0434/7019/2805/files/3_digit_addition_and_subtraction_word_problems_with_regrouping.pdf
    • https://cdn.shopify.com/s/files/1/0436/6968/4377/files/block_matrix_multiplication.pdf
    • https://cdn.shopify.com/s/files/1/0433/6451/6005/files/gokunu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/93861148098.pdf
    • https://cdn.shopify.com/s/files/1/0431/5581/6599/files/pedejifebu.pdf
    • https://cdn.shopify.com/s/files/1/0428/1162/1543/files/wewab.pdf
    • https://cdn.shopify.com/s/files/1/0430/6986/6141/files/96681829781.pdf
    • https://cdn.shopify.com/s/files/1/0434/4853/3144/files/12263445358.pdf
    • https://cdn.shopify.com/s/files/1/0430/9165/6864/files/mivar.pdf
    • https://cdn.shopify.com/s/files/1/0431/2521/1296/files/52251408743.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_off0000561f.bin
859a81e8a59c5cdbc9ed792debbf47b169c827c028d47d9f6a37ff93cf6d36fb
pdf-font-stream PDF embedded font (sfnt) at offset 0x561F 6156 bytes
font_01_sfnt_off00006ae6.bin
da5fcd86df7625401250f48b37a687ede43e436d467d30013bc2b76c493e53e6
pdf-font-stream PDF embedded font (sfnt) at offset 0x6AE6 10108 bytes