Malicious PDF — malware analysis report

Static analysis result for SHA-256 34007afc6062bf34…

MALICIOUS

PDF

47.5 KB Created: 2020-08-31 02:12:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5f74d72392adf84e1baa26d12a9064f1 SHA-1: 841f9fdc8ef45aa93d080f7df20d150130faf465 SHA-256: 34007afc6062bf344d493ec02d5d5faf0188959e3f19ff50b7f86ca0f145c79f
154 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'https://ttraff.cc/wix?keyword=adobe+photoshop+cs6+apk+full', suggesting a phishing or malware distribution attempt. It also features a link farm heuristic, indicating the document's primary purpose is to redirect users to external content. The embedded document body, though heavily obfuscated, contains the same suspicious URL and references to software downloads, reinforcing the lure.

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=adobe+photoshop+cs6+apk+full
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/8ab72e_682d7c7d24484bbaa973375958f4909d.pdf
    • https://static.usrfiles.com/ugd/b8c837_7b12ea54676b4fd69226921cd694a7aa.pdf
    • https://static.usrfiles.com/ugd/3de8a6_c71ca9a1441b42179c93c15c9354f659.pdf
    • https://static.usrfiles.com/ugd/b8c837_39835e4bb17e4edfab816511a3ef0091.pdf
    • https://cdn.shopify.com/s/files/1/0427/6482/8838/files/39764440216.pdf
    • https://cdn.shopify.com/s/files/1/0434/2621/8134/files/pet_practice_test_listening_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0431/3061/8011/files/34914341754.pdf
    • https://cdn.shopify.com/s/files/1/0437/9960/9505/files/84718695883.pdf
    • https://cdn.shopify.com/s/files/1/0429/0645/2131/files/azusa_street_book.pdf
    • https://cdn.shopify.com/s/files/1/0435/2062/2756/files/algebraic_expressions_grade_8.pdf
    • https://cdn.shopify.com/s/files/1/0431/1531/5351/files/xisimulisudo.pdf
    • https://cdn.shopify.com/s/files/1/0436/6581/7753/files/lodawudogoron.pdf
    • https://cdn.shopify.com/s/files/1/0434/5312/0669/files/46435476704.pdf
    • https://cdn.shopify.com/s/files/1/0438/3758/7613/files/educacion_definiciones.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_off00007a45.bin
f6b8327a5eebad361a5e4cf1d5578994074d467ee1c5fbd9fe2e40c62c6bedd8
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A45 5492 bytes
font_01_sfnt_off00008ced.bin
cbba034aced8c72feb87e040b31e6cc0f9f3ff65c676d2d928235b4e28575674
pdf-font-stream PDF embedded font (sfnt) at offset 0x8CED 10544 bytes