Malicious PDF — malware analysis report

Static analysis result for SHA-256 92e4031537f77ca2…

MALICIOUS

PDF

41.1 KB Created: 2020-08-20 22:18:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1744462896be117e75ea38557f45b938 SHA-1: 261d90038806b059d20c7f787bb1404713353188 SHA-256: 92e4031537f77ca269008dbef91b35fb1f57ef5ffc6d24e19515a1bc9c9cae70
152 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which, https://ttraff.com/pify?keyword=canon+imagerunner+2525+scanner+software, is identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'Canon imagerunner 2525 scanner software', suggesting a lure to trick users into clicking the malicious link. The presence of numerous other PDF links, many hosted on Shopify, indicates a link farm strategy, likely for SEO poisoning or distributing further malicious content.

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.com/pify?keyword=canon+imagerunner+2525+scanner+software
    • http://kikur.colourmatrixessences.com/uploads/1/3/2/8/132814194/woxonivewobug.pdf
    • http://mumasek.decadesboutique.com/uploads/1/3/1/4/131411688/8711bc355592c24.pdf
    • http://files.inspiredbytwoworlds.com/uploads/1/3/2/6/132682787/motunalovewi_jesezuzuk_kupitit.pdf
    • https://cdn.shopify.com/s/files/1/0430/7465/0261/files/35471815735.pdf
    • https://cdn.shopify.com/s/files/1/0439/0223/8875/files/libros_apocrifos_catolicos.pdf
    • https://cdn.shopify.com/s/files/1/0431/1675/7153/files/34785598158.pdf
    • https://cdn.shopify.com/s/files/1/0437/1811/5480/files/xoboxitux.pdf
    • https://cdn.shopify.com/s/files/1/0435/7246/1727/files/vapoza.pdf
    • https://cdn.shopify.com/s/files/1/0431/5011/4967/files/vemudivabonixurujoke.pdf
    • https://cdn.shopify.com/s/files/1/0429/1916/6105/files/71771819868.pdf
    • https://cdn.shopify.com/s/files/1/0435/8111/2483/files/68982711173.pdf
    • https://cdn.shopify.com/s/files/1/0431/3173/2125/files/66776787436.pdf
    • https://cdn.shopify.com/s/files/1/0428/3321/5654/files/sum_and_product_of_roots_of_cubic_equation.pdf
    • https://cdn.shopify.com/s/files/1/0435/9297/4499/files/58016123236.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000582f.bin
9b34c83b558aedbc57d3b45a70e3f748daafe6ce6299d40cf0f5cf6ee8913503
pdf-font-stream PDF embedded font (sfnt) at offset 0x582F 5420 bytes
font_01_sfnt_off00006aa1.bin
022e6121a9d2ec2f28b36c7eae99c5a13a2337135e0a1da20a62256b50dd638a
pdf-font-stream PDF embedded font (sfnt) at offset 0x6AA1 14380 bytes