Malicious PDF — malware analysis report

Static analysis result for SHA-256 6058eceff83104c3…

MALICIOUS

PDF

77.3 KB Created: 2021-04-08 18:41:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7fc5909443ae8bc414181d4be7b351bf SHA-1: 769610022703669d9048dbb809e0279f4c80c516 SHA-256: 6058eceff83104c3070cbbc2503dbe7ed78360836935c5bc6a167ad2ff337114
116 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a phishing or trojan payload. The 'SE_CALLBACK_LURE' heuristic strongly suggests a callback phishing or tech-support scam, where the document prompts the user to call a phone number. The embedded URL 'https://botokaw.ru/strik?utm_term=lash+extension+course+kitchener' likely serves as a lure or a redirect to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://botokaw.ru/strik?utm_term=lash+extension+course+kitchener
    • https://cdn-cms.f-static.net/uploads/4428033/normal_603b907873879.pdf
    • https://cdn.sqhk.co/letinumi/7Y1P94F/38181117470.pdf
    • https://static.s123-cdn-static.com/uploads/4411229/normal_5fed0fe4ecb2c.pdf
    • https://cdn-cms.f-static.net/uploads/4485942/normal_60411867b3718.pdf
    • https://static.s123-cdn-static.com/uploads/4451225/normal_5fc86547e4298.pdf
    • https://cdn-cms.f-static.net/uploads/4459185/normal_603023b38b48b.pdf
    • http://about-central.com/75313527200lulb7.pdf
    • http://koteyarn.moscow/present_perfect_continuous_and_past_perfect_continuous_exercises_with_answers0y2mw.pdf
    • https://cdn-cms.f-static.net/uploads/4373788/normal_5fe75c32b1b23.pdf
    • https://cdn.sqhk.co/gojikanemiju/ifOHBij/xamujalirarige.pdf
    • https://static.s123-cdn-static.com/uploads/4501479/normal_5febb057982dd.pdf
    • https://static.s123-cdn-static.com/uploads/4410989/normal_5ff395e4919a9.pdf
    • https://cdn-cms.f-static.net/uploads/4365642/normal_606e13b338f6c.pdf
    • https://static.s123-cdn-static.com/uploads/4369493/normal_5fe5c221a5d2e.pdf
    • https://static.s123-cdn-static.com/uploads/4474449/normal_5fceb1b446fe2.pdf
    • https://cdn.sqhk.co/fenajobuwer/jdBibhb/fosax.pdf
    • https://static.s123-cdn-static.com/uploads/4420930/normal_5fcaa81dd826b.pdf
    • http://faceskinagainbeauty.xyz/889809118180veof.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/30dbbf37-2edb-40f7-bda8-66417504d290/33046331055.pdf
    • https://uploads.strikinglycdn.com/files/b2ffe71f-352f-451c-a916-ad09f70ca8d1/how_to_use_the_keurig_brewer_maintenance_accessory.pdf
    • https://uploads.strikinglycdn.com/files/9cc52cfd-5c1a-4a7e-bab4-497c328abdf7/what_does_the_idiom_dead_to_the_world_mean.pdf
    • https://uploads.strikinglycdn.com/files/654d4622-cc41-4b8f-86c1-fb33d2d570e5/haz_llover_vino_nuevo_letra_y_acordes.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eeb7.bin
41bd1b87682b67fd24487089ee1be28a2e745924fd207f68abc8c0d84a1f1970		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEEB7 4928 bytes
font_01_sfnt_off0000ff79.bin
4c6372707e9071572a2dc81c737c88c9c5438244e546bc088cf21a0324d3eba7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFF79 11968 bytes

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