Malicious PDF — malware analysis report

Static analysis result for SHA-256 064b5adff9c69c76…

MALICIOUS

PDF

53.0 KB Created: 2020-08-15 07:50:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7d950a47febf67424e77ba8107243e7a SHA-1: 967301a382714ea17087e2d3d79667f47d8c3cdf SHA-256: 064b5adff9c69c7660842b37188ba2e34889708713475577edc53aaf876618d8
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.ru, which is likely used to funnel victims to further malicious content. The document body, though heavily obfuscated, contains this URL and appears to be a lure related to a 'Gw2 cooking leveling guide'. The presence of numerous external PDF links also suggests a link farm or SEO manipulation tactic to distribute malicious content.

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.ru/pify?keyword=gw2+cooking+leveling+guide
    • http://files.kzooathleticwellness.com/uploads/1/3/1/1/131163859/bawali-wemagawom.pdf
    • http://wusamoz.meeginc.com/uploads/1/3/2/6/132683051/rijaba.pdf
    • http://files.thebagelers.com/uploads/1/3/0/8/130814397/c83998bd633f9.pdf
    • http://files.learningsupport.shenfieldlearning.com/uploads/1/3/2/6/132695568/fbe2e6.pdf
    • http://files.bbfcafe.shop/uploads/1/3/2/7/132740270/1151702.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0431/9661/2768/files/buvoganixitirola.pdf
    • https://cdn.shopify.com/s/files/1/0434/7104/4770/files/ruzono.pdf
    • https://cdn.shopify.com/s/files/1/0436/5841/2185/files/chevy_tracker_repair_manual.pdf
    • https://cdn.shopify.com/s/files/1/0438/4669/7125/files/the_carnival_of_venice_trumpet.pdf
    • https://cdn.shopify.com/s/files/1/0431/2825/8726/files/aneurisma_de_aorta_abdominal_infrarrenal.pdf
    • https://cdn.shopify.com/s/files/1/0438/2942/8384/files/discussion_method_of_teaching_and_learning.pdf
    • https://cdn.shopify.com/s/files/1/0450/9263/4789/files/2020_radiology_cpt_codes_diagnostic_centers_of_america.pdf
    • https://cdn.shopify.com/s/files/1/0437/2326/0058/files/lemuloxusixexeziw.pdf
    • https://cdn.shopify.com/s/files/1/0432/4684/6119/files/square_root_calc.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_off00007f3a.bin
209df40ed01791324070a773c73ffcf6e3319ee177240016b3d6bffeb7851827		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F3A 4804 bytes
font_01_sfnt_off00008fb6.bin
5bdb13ef9fb6f8c262c4f1a743cc40540a98a5f1979f9c1a9a031cddc271e59a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8FB6 13408 bytes
font_02_sfnt_off0000b947.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB947 4324 bytes

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