Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e87144f97cac239…

MALICIOUS

PDF

36.7 KB Created: 2020-08-24 20:49:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 52c84851f8ce0e86f9affad3edb064e0 SHA-1: b192f355fddcada50c87349d387997592fc57228 SHA-256: 4e87144f97cac239dc8ea5f93c9d39ead20853c8e67fb83c9c08b77594cc8e61
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains multiple embedded links, with one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to a vehicle manual and the URL itself, suggesting a lure. The heuristic firings confirm the presence of malicious redirector links and a link farm within the PDF structure. No scripts were extracted from this sample.

Heuristics 3

  • 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.
  • 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/pify?keyword=2013+chevy+malibu+ltz+manual
    • http://fosaz.susanlstraub.com/uploads/1/3/0/7/130739457/334c08d024fafb0.pdf
    • http://damixov.nadialouderback.com/uploads/1/3/2/7/132741024/1630806.pdf
    • http://files.onyerbikebookkeeping.com/uploads/1/3/0/7/130739340/60876924b48.pdf
    • http://files.statsworldcollectibles.com/uploads/1/3/1/4/131453917/gosukenuvov_xorot.pdf
    • http://siven.dontworryaboutme.com/uploads/1/3/1/3/131378950/magusesewemido-gaxisuravewur-mukonurar-zoxolikuweriwa.pdf
    • https://cdn.shopify.com/s/files/1/0431/8245/7000/files/44435490955.pdf
    • https://cdn.shopify.com/s/files/1/0448/2105/3600/files/ejercicios_de_enlaces_ionicos_y_covalentes_resueltos.pdf
    • https://cdn.shopify.com/s/files/1/0429/0645/2131/files/61500947419.pdf
    • https://cdn.shopify.com/s/files/1/0432/8049/8841/files/50866924322.pdf
    • https://cdn.shopify.com/s/files/1/0431/7813/1611/files/lujigukimavu.pdf
    • https://cdn.shopify.com/s/files/1/0462/7968/8341/files/vojegarogifuwifalelegu.pdf
    • https://cdn.shopify.com/s/files/1/0435/3350/0565/files/gemorisijefatolafa.pdf
    • https://cdn.shopify.com/s/files/1/0434/1645/3272/files/texilosazogipugazelipa.pdf
    • https://cdn.shopify.com/s/files/1/0430/0190/5315/files/64962640372.pdf
    • https://cdn.shopify.com/s/files/1/0435/2229/3920/files/36500498036.pdf
    • https://cdn.shopify.com/s/files/1/0432/5467/7662/files/butixejozoj.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/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000458c.bin
52beeb96451769e8979ffef29efa312c9c5a7a4b9d5a9edae5d99df8ab39efc2
pdf-font-stream PDF embedded font (sfnt) at offset 0x458C 5284 bytes
font_01_sfnt_off00005766.bin
7850eae6766e803b5f31960a731e8c2dfce674ff8813397d646dbf262cd6d790
pdf-font-stream PDF embedded font (sfnt) at offset 0x5766 9492 bytes
font_02_sfnt_off000077c5.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0x77C5 4324 bytes