Malicious PDF — malware analysis report

Static analysis result for SHA-256 7306f4c0d869bfdd…

MALICIOUS

PDF

63.2 KB Created: 2020-09-06 19:26:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a7f742bd7ebf718c0d0979d636d4df5f SHA-1: 11990fe23fcc62fe02ecb8c2e1fcc8d8c8df7575 SHA-256: 7306f4c0d869bfdd7afde8066ab550d1def1649e529af9f757ff8d9998393e29
154 Risk Score

Malware Insights

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

The PDF contains numerous links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains a URL that appears to be a lure for a 'Pokemon blaze black 2 legendary guide'. The presence of embedded links and the ML classifier's high confidence indicate a malicious intent to redirect users to potentially harmful 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.me/wix?keyword=pokemon+blaze+black+2+legendary+guide
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/0032/3478/files/accord_guitare_basse_5_cordes.pdf
    • https://cdn.shopify.com/s/files/1/0431/3199/4280/files/94991994704.pdf
    • https://cdn.shopify.com/s/files/1/0428/7922/1927/files/95567936882.pdf
    • https://cdn.shopify.com/s/files/1/0431/9802/1793/files/autoionization_of_water.pdf
    • https://cdn.shopify.com/s/files/1/0431/6128/8868/files/muwaradetesanapus.pdf
    • https://static.usrfiles.com/ugd/66c878_234b9b27685c4cfc9cdc35266a3d0767.pdf
    • https://static.usrfiles.com/ugd/9c43ec_8e4f1b54cc1a42798dc00d693f91c0c0.pdf
    • https://static.usrfiles.com/ugd/575363_18535e8502274d678a2bc00867b06102.pdf
    • https://static.usrfiles.com/ugd/0a593f_3a257bbc61604a46a9fcb6c2a87bcf7b.pdf
    • https://static.usrfiles.com/ugd/1acd69_fb8d59c51af0451ea11cb9fe3e2f34b5.pdf
    • https://static.usrfiles.com/ugd/1cc7e8_2a4066263c714f0f8c8467e88ac739cf.pdf
    • https://static.usrfiles.com/ugd/9b5f63_eb3c3b720ca944faacbf1fb859f96de4.pdf
    • https://cdn.shopify.com/s/files/1/0437/7378/8321/files/bunugedelatowibuximu.pdf
    • https://cdn.shopify.com/s/files/1/0438/2969/0525/files/java_int_max.pdf
    • https://cdn.shopify.com/s/files/1/0439/0577/7832/files/best_hinge_answers.pdf
    • https://cdn.shopify.com/s/files/1/0432/5743/0176/files/addicted_2014_full_movie_free_hd.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_off0000b6a1.bin
fc5c51bfacfca59c166ba035430ab56bfc411f38246c513ba724bb470c6673b8
pdf-font-stream PDF embedded font (sfnt) at offset 0xB6A1 5572 bytes
font_01_sfnt_off0000c999.bin
bb20bf9205637d53d0183a99aa3bd6de07c9b590210392749096b73265d9d2f8
pdf-font-stream PDF embedded font (sfnt) at offset 0xC999 11116 bytes