Malicious PDF — malware analysis report

Static analysis result for SHA-256 78e10929d18a27a2…

MALICIOUS

PDF

75.4 KB Created: 2021-04-03 00:55:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 94ccbf4c25ff443c08c923be6d496734 SHA-1: e3fd1bdfca1edba45ca263a104f4915ed09405e8 SHA-256: 78e10929d18a27a278c78465c964639312805987a95b4e8a8a1155acc763d6e5
124 Risk Score

Malware Insights

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

The PDF file contains numerous external links, a technique often used for SEO spam or phishing. The ClamAV detection and the presence of multiple unknown reputation URLs strongly suggest malicious intent. The document body, though heavily obfuscated, contains keywords related to 'Kenshi faction relations cheat', indicating a lure to potentially malicious websites.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4647

Heuristics 4

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://kuzutuzo.ru/wix?keyword=kenshi+faction+relations+cheat
    • http://siwivelijutore.medianewsonline.com/nikon_dx_vr_battery_charger.pdf
    • http://vakekaninu.iblogger.org/biochemical_test_for_streptococcus.pdf
    • http://xuxetosufuzo.getenjoyment.net/jejudibuwowozusum.pdf
    • http://gelokan.sportsontheweb.net/whirlpool_gold_dishwasher_owners_manual.pdf
    • http://xogavuw.medianewsonline.com/how_to_be_a_3_man_amazon.pdf
    • http://bomaduworofa.medianewsonline.com/sat_test_dates_2020_hillsborough_county.pdf
    • http://rerixen.scienceontheweb.net/markovnikov_rule_examples.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://911f1565-2faa-4874-b261-330d521e7362.filesusr.com/ugd/f46427_26fdbb6a84774d97a7b223e88d8dcf67.pdf?index=true
    • https://c0a42e0f-4cce-4e1b-84a6-2a5440198d67.filesusr.com/ugd/440b6d_f413adf7429c4842945966bb2f39c4bc.pdf?index=true
    • https://f8d4b294-f952-4a11-85e8-0a3036f9bdaf.filesusr.com/ugd/ad8f3a_d487c548d3be45b4a9d5e027e25151fd.pdf?index=true
    • https://44dd6259-7513-41c7-b2f1-b2b1fc385d2e.filesusr.com/ugd/63022f_11631f25ddce4c3880ee4732c7554516.pdf?index=true
    • http://negumigimewote.onlinewebshop.net/adobe_scan_skaner_ocr.pdf
    • https://5053e88e-9e18-4719-890c-32a1cca0295d.filesusr.com/ugd/411503_398d9473450940d096cd3a540a5c7998.pdf?index=true
    • http://xinovedef.rf.gd/60684892078.pdf
    • https://6525eaf8-9a42-4119-9fb4-c3d475b3b78e.filesusr.com/ugd/80bfa9_ad4002e122b64871b7ce6566cbfa8cb9.pdf?index=true
    • http://mevuxuru.atwebpages.com/download_file_from_url_online.pdf
    • http://javasuk.epizy.com/6883227330.pdf
    • https://cc652f91-b1ab-470c-b36f-46d838ef85b2.filesusr.com/ugd/fbccce_21b097c77cc142e4b81bbd18770fc31b.pdf?index=true
    • https://6e229dea-1f83-4be8-8cd3-388eabd4f5e3.filesusr.com/ugd/1cfe37_816657ab77484ab3aaf3f3026ade55f2.pdf?index=true
    • https://62dace35-232c-43a2-b3e8-6cf19ad57148.filesusr.com/ugd/42ae31_96973b81de5647c2bc0d15b3f544e787.pdf?index=true
    • https://6c8027e1-9878-41b3-a9ef-32ba2b6bcd02.filesusr.com/ugd/185811_ddfa28e8da2441858e3fc7510d61d6c1.pdf?index=true
    • http://losepavifano.epizy.com/middle_back_exercises.pdf
    • https://27f1a270-5048-4778-87f0-574dfe85248a.filesusr.com/ugd/b7306e_fb643181c3d54f3e827e62d6dc06d8b7.pdf?index=true
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f39f.bin
bb2ed8f2f2af071f39e252a6e4f6d25d269a524e52a93921fd30b572d254806a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF39F 4936 bytes
font_01_sfnt_off00010468.bin
68dc26437766aaaae80a78d11622aa681ad864793f01761dff903623aec6c33d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10468 10720 bytes

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