Malicious PDF — malware analysis report

Static analysis result for SHA-256 88f536c070722425…

MALICIOUS

PDF

635.1 KB Created: 2020-08-15 22:26:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a15ae3b524ab594edbb99de1fdfbb7a3 SHA-1: 7eea2bde1da597936e686fc7440f0fb785a49531 SHA-256: 88f536c070722425fd9b0c5eaab79005c8f08b650066f8c37b3892fe6353a6a6
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a heuristic indicating it's a payment redirection lure, describing changes to bank instructions. It also contains a critical heuristic firing for a malicious redirector link. The embedded URL https://ttraff.cc/pify?keyword=neurokinetic+therapy+pdf+chomikuj is identified as a malicious redirector. The document body, though heavily obfuscated, contains this URL and text fragments suggesting it's related to 'neurokinetic therapy pdf'.

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.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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=neurokinetic+therapy+pdf+chomikuj
    • http://files.revivalhub.eu/uploads/1/3/1/8/131856186/gafaxilete-lalaj.pdf
    • https://cdn.shopify.com/s/files/1/0435/5915/7921/files/l_affretement_maritime.pdf
    • https://cdn.shopify.com/s/files/1/0431/0994/1415/files/32984791494.pdf
    • https://cdn.shopify.com/s/files/1/0449/8325/5198/files/railway_reservation_form.pdf
    • https://cdn.shopify.com/s/files/1/0436/3694/9152/files/hot_point_oven_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/5271/9515/files/albany_county_clerk_s_office.pdf
    • https://cdn.shopify.com/s/files/1/0431/4929/5776/files/dofenijeve.pdf
    • https://cdn.shopify.com/s/files/1/0430/3391/9645/files/63607992067.pdf
    • https://cdn.shopify.com/s/files/1/0433/2794/6904/files/61131082743.pdf
    • https://cdn.shopify.com/s/files/1/0437/7654/0834/files/61185542405.pdf
    • https://cdn.shopify.com/s/files/1/0431/7007/0687/files/navcomp_form_3065.pdf
    • https://cdn.shopify.com/s/files/1/0434/1540/4695/files/49314037419.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/

Extracted artifacts 7

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_019_off0009a4a3.bin
bdd73e96e6a1144ff58e11e8e180cf1d3f806db619f45635a01a496c5a822090		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x9A4A3 22128 bytes
font_00_sfnt_off0008d5bf.bin
5f3a57dbd4f36b60d99dfd41bad195540945bdb4adf055cc5f89772093a05183		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D5BF 6768 bytes
font_01_sfnt_off0008e6bf.bin
85152482e745e80e3354b84ed01f455a4142d4717f0ae4a7f1e0753ce75313fe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E6BF 20096 bytes
font_02_sfnt_off0009270b.bin
f5ec862dd67ea71b26224cfe06b0b833d309ce82d472e64c1cbe531fc3f8ac20		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9270B 5396 bytes
font_03_sfnt_off00093958.bin
bed1d87db145f61167d42b23d9e76400200c0f381ed8725de557b9965f7b1c51		 pdf-font-stream PDF embedded font (sfnt) at offset 0x93958 9528 bytes
font_04_sfnt_off00095454.bin
2338e2bc83eadea9e3ba60b876f6cda7dd9ccbe8b2e467bd0cfc75416ad27e6f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x95454 30228 bytes
font_06_sfnt_off0009ca0b.bin
52a1f68b75921ee593ff94dfc319b5248efc3bd1ef57dab49d8caf92e84eccff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9CA0B 6128 bytes

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