Malicious PDF — malware analysis report

Static analysis result for SHA-256 095402d20982a629…

MALICIOUS

PDF

41.0 KB Created: 2020-08-30 00:40:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 72cc614f10e2c83981fdd46115944bee SHA-1: d3bae9135f7811f8f8260810934ba85d4e30cba2 SHA-256: 095402d20982a629bdd7aacfbe2ab2558790e4991d1c5945829b274aeabecc2a
154 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a known malicious domain, ttraff.com, disguised as a search result for a software serial number. The ML classifier strongly indicates maliciousness, and the PDF structure includes a link farm pointing to various PDF files, likely for SEO poisoning or traffic generation. No scripts were extracted, but the primary attack vector is the malicious redirector.

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=adobe+premiere+pro+cs4+serial+number
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://static.usrfiles.com/ugd/3826db_5a9b4f2b59324106b0f8e093094aa915.pdf
    • https://static.usrfiles.com/ugd/67f5f7_ee273014692748c18d4bcc87c96f26d7.pdf
    • https://static.usrfiles.com/ugd/80c1db_e31200b5eb7b4d42ab1b79da2464bf02.pdf
    • https://static.usrfiles.com/ugd/07625c_9bdb1ba8c7f3439f8e45d09f1a64d556.pdf
    • https://static.usrfiles.com/ugd/ac72e0_87afc94de85f48e6ba462d163ba458aa.pdf
    • https://cdn.shopify.com/s/files/1/0441/2011/3304/files/patofisiologi_avian_influenza.pdf
    • https://cdn.shopify.com/s/files/1/0429/7841/0655/files/pepale.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/90442425312.pdf
    • https://cdn.shopify.com/s/files/1/0435/7668/8798/files/37321431831.pdf
    • https://cdn.shopify.com/s/files/1/0434/3444/2917/files/pathophysiology_5th_edition_copstead.pdf
    • https://static.usrfiles.com/ugd/99afdc_123f0c06a4254489a796a5907413cf99.pdf
    • https://static.usrfiles.com/ugd/b8c837_b3fd92bbe90345d5827dee7359051f6f.pdf
    • https://static.usrfiles.com/ugd/b8c837_0eb3a93c1f1a424090ce6f63b8e968f0.pdf
    • https://static.usrfiles.com/ugd/253000_505a686b7762458386aac480151d5a5f.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_off000052f6.bin
7d0fe3ea5af3bc72700181727345eef7645454c56d85393e7abd9e3a683a0f97		 pdf-font-stream PDF embedded font (sfnt) at offset 0x52F6 5240 bytes
font_01_sfnt_off0000649b.bin
a1ed135d071b3868545ac5c3e34ec351b154c2c3f0756b0b6f5a7c50b6fc270a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x649B 10752 bytes
font_02_sfnt_off0000891e.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x891E 4324 bytes

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