Malicious PDF — malware analysis report

Static analysis result for SHA-256 7cb4a0181309a7f6…

MALICIOUS

PDF

40.9 KB Created: 2020-08-02 23:17:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ca6340dbcf8068426fd45f0a51681dbc SHA-1: 6e87ba71fd866265bd796124027e682f239bc991 SHA-256: 7cb4a0181309a7f69f89632332fed1c7059d4aa2098bd7a8cb22ec6b71ad1ddc
154 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a "long range shooting handbook pdf" download. This link, `https://ttraff.cc/pify?keyword=long+range+shooting+handbook+pdf`, is designed to lead users to malicious infrastructure. The document also contains a large number of links to other PDFs hosted on Shopify, likely for SEO manipulation or to appear more legitimate.

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=long+range+shooting+handbook+pdf
    • http://files.sorbit.org/uploads/1/3/2/3/132303077/2400744.pdf
    • http://files.4wardproject.com/uploads/1/3/2/6/132683357/1357468.pdf
    • http://files.speechbasics1.com/uploads/1/3/0/8/130815228/xirupunuzuzag-gotigamuja-jidoj.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/2956/0481/files/48642789987.pdf
    • https://cdn.shopify.com/s/files/1/0434/7055/3238/files/42681839470.pdf
    • https://cdn.shopify.com/s/files/1/0436/1699/3440/files/mikabilafe.pdf
    • https://cdn.shopify.com/s/files/1/0428/0093/9164/files/putoxapobemiludofisa.pdf
    • https://cdn.shopify.com/s/files/1/0429/2709/5967/files/komofa.pdf
    • https://cdn.shopify.com/s/files/1/0428/9105/1161/files/tedesogaguwedifijas.pdf
    • https://cdn.shopify.com/s/files/1/0428/3459/1907/files/23716863045.pdf
    • https://cdn.shopify.com/s/files/1/0429/1582/3772/files/53982589064.pdf
    • https://cdn.shopify.com/s/files/1/0428/0962/2687/files/52897407002.pdf
    • https://cdn.shopify.com/s/files/1/0428/6529/5526/files/78093145287.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_off00006187.bin
66efd4a9c4f2bd9351dbd840ee41d5b2e52589a9f1cd7288ffece3aa5e965862
pdf-font-stream PDF embedded font (sfnt) at offset 0x6187 5416 bytes
font_01_sfnt_off000073e9.bin
948d78c9f4a351aaf05bab131aab0fcee2553c0e32457d94044bbce28b6d61ca
pdf-font-stream PDF embedded font (sfnt) at offset 0x73E9 10268 bytes