Malicious PDF — malware analysis report

Static analysis result for SHA-256 76d323ea4f684294…

MALICIOUS

PDF

41.6 KB Created: 2020-08-30 01:49:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4d24dd31ebefa441f161fa48d40ed5db SHA-1: 3911e558d59789b77fe6a2548a8b007750ffc0b3 SHA-256: 76d323ea4f6842949304287cb7ac0d72628ce5c46f657dd84ce325d01c95bbe1
154 Risk Score

Malware Insights

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

This PDF document contains embedded links that redirect to malicious infrastructure, specifically a URL related to a "wwe 2k15 move list" lure. The document also functions as a link farm, directing users to numerous other PDFs hosted on Shopify. The primary malicious URL is https://ttraff.com/wix?keyword=wwe+2k15+move+list, which is flagged as a malicious redirector. The ML classifier strongly indicates maliciousness.

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/wix?keyword=wwe+2k15+move+list
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/1437/9930/files/adobe_reader_not_opening_on_mac.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dazekenikajupupapunel.pdf
    • https://cdn.shopify.com/s/files/1/0427/5005/0460/files/logexofijogogonipuwozija.pdf
    • https://cdn.shopify.com/s/files/1/0435/7586/9599/files/torazuluwunometajobun.pdf
    • https://cdn.shopify.com/s/files/1/0429/5085/2762/files/36676110385.pdf
    • https://static.usrfiles.com/ugd/93c935_be24442254864bbd8249aaee43e43142.pdf
    • https://static.usrfiles.com/ugd/b8c837_104db730e1484e2db7ac9acc8edcaa93.pdf
    • https://static.usrfiles.com/ugd/d1d005_018b0ed7420d4a149d95dfbe53a5526a.pdf
    • https://cdn.shopify.com/s/files/1/0430/9109/9799/files/19466184596.pdf
    • https://cdn.shopify.com/s/files/1/0434/6570/3590/files/6857133099.pdf
    • https://static.usrfiles.com/ugd/b8c837_ec45ed71bece4e2e823bf572376c4d79.pdf
    • https://static.usrfiles.com/ugd/74c34a_f28a1d7c7e8e42638847379d6aaf9b24.pdf
    • https://static.usrfiles.com/ugd/b8c837_a0bad03dd9e14df385d2d34b03e16fb8.pdf
    • https://static.usrfiles.com/ugd/b8c837_19d6b2351b174b71a02d7582669cccff.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_off00006429.bin
870791229dcd6d119d6ff0aeffcf117441efd9cc53b4e89d6f1aa022187165d6
pdf-font-stream PDF embedded font (sfnt) at offset 0x6429 5060 bytes
font_01_sfnt_off00007587.bin
eef280b1e1647969053c039be7ffb00b25cd742a3e71603b8bb3c4ff94f1e93b
pdf-font-stream PDF embedded font (sfnt) at offset 0x7587 10708 bytes