Malicious PDF — malware analysis report

Static analysis result for SHA-256 68c7154f65ad2f90…

MALICIOUS

PDF

55.6 KB Created: 2020-08-29 20:45:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 392488197fd39cdc61a085badd2c5a2e SHA-1: a1852757b11e4495582c006382aaf49b9dac6e82 SHA-256: 68c7154f65ad2f90392ec5d547a1fb37a4679efcbf98ca6c2eaa2efd65224821
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm designed to redirect users. The primary redirector URL is https://ttraff.com/wix?keyword=bohemia+mp3+rap+song+download, which is flagged as malicious. This suggests the document is part of a campaign to drive traffic to malicious sites, likely for phishing or malware distribution.

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=bohemia+mp3+rap+song+download
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fedorahosted.org/lohit
    • https://static.usrfiles.com/ugd/b8c837_190d8abef2c64a88b1d03a9bea354686.pdf
    • https://static.usrfiles.com/ugd/760101_aecdaf21f08f4e218470648e98da09e6.pdf
    • https://static.usrfiles.com/ugd/b8c837_5a3ad819ca7040918230151a692985cc.pdf
    • https://static.usrfiles.com/ugd/accd1f_e204f43ed71b48e5b4ca19038c88429b.pdf
    • https://static.usrfiles.com/ugd/b8c837_33bf9ed1604e491bbb328ac403b7ec51.pdf
    • https://cdn.shopify.com/s/files/1/0463/3542/6721/files/5958230381.pdf
    • https://static.usrfiles.com/ugd/b8c837_3a0802128e5744a5915a5a9dec67ab6b.pdf
    • https://static.usrfiles.com/ugd/b8c837_1e0d82353fcf42f18595ed52e8a2d523.pdf
    • https://static.usrfiles.com/ugd/b8c837_2fa9c06a96f2433387519dec2ec6ac9e.pdf
    • https://static.usrfiles.com/ugd/b8c837_f1b405fb8ba84b7eadd8756f7b612aad.pdf
    • https://static.usrfiles.com/ugd/b8c837_2dc5fa4aef0642abb8432000f11f9378.pdf
    • https://cdn.shopify.com/s/files/1/0461/5421/9683/files/wow_warlock_leveling_guide_1-_90.pdf
    • https://cdn.shopify.com/s/files/1/0434/1710/8642/files/types_of_audit_risk.pdf
    • https://cdn.shopify.com/s/files/1/0434/0308/3928/files/pujuvuwazajonumu.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c20.bin
0e9434e2d9816c5c83aa69480b65965eaa24852e75eeaf6639891766b5d076ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C20 5676 bytes
font_01_sfnt_off00007f50.bin
b71d7ee21b4043be4700aa75e9a9c8390e88199f2a08ad80d4fd6fd358d0018b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F50 2748 bytes
font_02_sfnt_off00008afe.bin
64f60f63d0988fe28eadc96dbee4f40fd12934817808a2f764e89dbb089f2510		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8AFE 15168 bytes
font_03_sfnt_off0000ba41.bin
1135e8a0e8fe436dba7adc4f34718a689b46316e5b28bee267b7e0df7a37af9d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBA41 16556 bytes

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