Malicious PDF — malware analysis report

Static analysis result for SHA-256 834e207c706500d1…

MALICIOUS

PDF

43.2 KB Created: 2020-09-06 16:13:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6a6cf2022d9cd76078b9c64a9009acb4 SHA-1: 3558887586f4ede76e29937c99c274c439d4ad07 SHA-256: 834e207c706500d19150de3258ed746707840a5736e8c10dc5d2d3b2514ce858
94 Risk Score

Malware Insights

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

This PDF document contains a link to a known malicious redirector infrastructure, specifically 'https://ttraff.club/wix?keyword=cisco+packet+tracer+7.+1++64+bit'. The document body, though heavily obfuscated, appears to contain text related to software downloads, suggesting a lure to trick users into clicking the malicious link. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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.club/wix?keyword=cisco+packet+tracer+7.+1++64+bit
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0434/8339/8310/files/aggregate_test.pdf
    • https://cdn.shopify.com/s/files/1/0431/1767/4656/files/lil_baby_net_worth_2019.pdf
    • https://cdn.shopify.com/s/files/1/0434/8664/2338/files/sonoponobagiwiwinar.pdf
    • https://cdn.shopify.com/s/files/1/0431/3923/5997/files/assault_android_cactus_last_boss.pdf
    • https://cdn.shopify.com/s/files/1/0428/8462/8633/files/koreravekagopunigidapu.pdf
    • https://cdn.shopify.com/s/files/1/0427/5788/2022/files/36815586110.pdf
    • https://cdn.shopify.com/s/files/1/0433/8014/6334/files/nimutekevesufujedabiril.pdf
    • https://static.usrfiles.com/ugd/c4f63d_360c508c672548b9ae2693f125b75f19.pdf
    • https://static.usrfiles.com/ugd/d8966e_4d8294cd6ad9427194efc2d332d6130e.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005d79.bin
98402c15fa5ade20ab9eb026f3fd0d7631747e333c7a547fb517dce5673f203f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D79 5208 bytes
font_01_sfnt_off00006f5d.bin
cb254c769170502da79599b9b0efee2cbb98582c6f066af219322e34aa852914		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F5D 10296 bytes
font_02_sfnt_off00009264.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9264 4324 bytes

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