Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ad01704d172b8eb…

MALICIOUS

PDF

77.4 KB Created: 2020-08-25 00:27:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 11a1446417dc0ea1fba690cfbc6e2da9 SHA-1: 22d293dfb407c0e8524d413a34bc2480da76cdaf SHA-256: 7ad01704d172b8eb8f50f0ec4a40b6c62c74b89312a705578643d1350d06d12a
154 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to Shopify, but one critical link directs to a known malicious redirector. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains the malicious URL, suggesting an attempt to disguise its true destination.

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=articles+of+faith+pdf+talmage
    • http://nozekape.martinreynoldsopticians.co.uk/uploads/1/3/0/7/130739046/sofezenovak_wirerokijaxeso_zitevu.pdf
    • http://witug.thelotuscollaborative.com/uploads/1/3/1/8/131856166/telususo-serifezetawud-berunatuf-megoxeborukev.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/4987/6630/files/12_cranial_nerves_and_functions.pdf
    • https://cdn.shopify.com/s/files/1/0431/5899/5095/files/breath_of_the_wild_recipe.pdf
    • https://cdn.shopify.com/s/files/1/0430/8497/2183/files/pokemon_emulator_iphone.pdf
    • https://cdn.shopify.com/s/files/1/0427/9477/8791/files/91374978774.pdf
    • https://cdn.shopify.com/s/files/1/0428/1548/8163/files/watis.pdf
    • https://cdn.shopify.com/s/files/1/0431/9723/5363/files/nolig.pdf
    • https://cdn.shopify.com/s/files/1/0431/3235/4711/files/73595522756.pdf
    • https://cdn.shopify.com/s/files/1/0431/2137/7434/files/usda_dietary_guidelines_for_older_adults.pdf
    • https://cdn.shopify.com/s/files/1/0429/9508/9571/files/advantages_disadvantages_mother_tongue_based_multilingual_education.pdf
    • https://cdn.shopify.com/s/files/1/0434/7048/7712/files/52129026221.pdf
    • https://cdn.shopify.com/s/files/1/0437/6625/1677/files/34759101408.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_off0000f261.bin
c61011fd069854d91a112f587c6b352802164cfd97413a58c367448cb8552f3b
pdf-font-stream PDF embedded font (sfnt) at offset 0xF261 5556 bytes
font_01_sfnt_off0001051e.bin
cc094eb44c8f9043835251aaa7991438c69d48b2cacb89bcfd843709ec46bc96
pdf-font-stream PDF embedded font (sfnt) at offset 0x1051E 10360 bytes