Malicious PDF — malware analysis report

Static analysis result for SHA-256 650fbe5adb2448e0…

MALICIOUS

PDF

76.9 KB Created: 2021-03-16 21:47:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8da2a95382b01e89a7716fce9725a191 SHA-1: 2de10b0f88a9c04548a44688c3745e51f003753d SHA-256: 650fbe5adb2448e0549944681dfba248cc88410bd1b69577b0bab4c613e631d1
116 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan threat. The document body, though obfuscated, contains keywords related to farming, likely a lure to trick users into visiting the embedded URL. The heuristic 'SE_CALLBACK_LURE' further suggests a phishing context, possibly leading to a callback scam or tech-support fraud.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/award?keyword=herbs+and+spices+farming+pdf
    • https://xonokuraku.weebly.com/uploads/1/3/3/9/133988937/4e9df1cddf0323c.pdf
    • http://bevatijiwavefad.22web.org/seaworld_orlando_park_map.pdf
    • http://kellys.space/47010246656d0w4f.pdf
    • http://besemafobekilir.22web.org/40911768612.pdf
    • http://grigolia-studio.ru/3091099698600ys0.pdf
    • https://cdn-cms.f-static.net/uploads/4365634/normal_60203486b6ec4.pdf
    • https://cdn-cms.f-static.net/uploads/4392861/normal_6012965ae19af.pdf
    • https://vewudati.weebly.com/uploads/1/3/0/8/130873955/159917c8f3.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://sovizaz.epizy.com/99268306011.pdf
    • http://vudebedof.rf.gd/bee_affidavit_template.pdf
    • https://uploads.strikinglycdn.com/files/c526c859-ada0-411e-926f-318e0f85d760/wilurufugejazidenup.pdf
    • http://bakowap.epizy.com/8487053786.pdf
    • https://uploads.strikinglycdn.com/files/d4a5b6cb-8326-42e7-9065-16d3dc5bf3cf/godin_a6_ultra_koa_hg_limited_edition.pdf
    • http://gunimatol.epizy.com/how_to_spin_only_on_electrolux_washer.pdf
    • https://uploads.strikinglycdn.com/files/80a6fc9c-3725-41ce-8b21-c883e2c18f0d/plantronics_wireless_headset_cs351n_manual.pdf
    • http://lipojutezudu.rf.gd/creative_cv_template_word_doc.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_off0000f007.bin
1d474cdedf5a2dab4761bfe4adccf99ea91ec9606cbff2f07a25d80044a9ecce
pdf-font-stream PDF embedded font (sfnt) at offset 0xF007 5544 bytes
font_01_sfnt_off000102c4.bin
9e5d703da096ce243f398563b31962312538d79a3fa2bd52c00ce2f6974ae588
pdf-font-stream PDF embedded font (sfnt) at offset 0x102C4 10484 bytes