Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0053472d938690c…

MALICIOUS

PDF

68.7 KB Created: 2021-04-18 19:04:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 3ff1bd0124b37a706992d15f8e8213d3 SHA-1: e60b87d7f0a07010ab05c9aaf47359a96495b712 SHA-256: f0053472d938690cccb9839f16a81756be0878c8371621d97d5e060cff518456
154 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9958

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://yafferge.ru/strik?utm_term=pebble+smartwatch+ios In PDF document text
    • https://static.s123-cdn-static.com/uploads/4393362/normal_5fe278b4ae769.pdfIn PDF document text
    • https://cdn.sqhk.co/kasuwune/jcJhchf/66683532125.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392462/normal_5fca421c70394.pdfIn PDF document text
    • https://cdn.sqhk.co/zanaforare/gjo8Hif/the_onion_knife_launcher.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368235/normal_5feea669f1425.pdfIn PDF document text
    • https://cdn.sqhk.co/rivitovolu/8gfttIh/nukevater.pdfIn PDF document text
    • http://gijutudubesakuz.iblogger.org/lojexeguwoga.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367921/normal_604767d8e8bf3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461516/normal_602dc8c284680.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472206/normal_6055a385e841a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4472208/normal_5fde68c701315.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4497687/normal_600d612fd64da.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417024/normal_6000b92ac6d63.pdfIn PDF document text
    • https://cdn.sqhk.co/xorilulog/OPjcbS1/babushan_mohanty_photo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479212/normal_60359d7091f30.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493201/normal_60336130e1e6c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467945/normal_5fe413092fdaa.pdfIn PDF document text
    • https://cdn.sqhk.co/xutazazo/ijhOijH/fbi_swatting_statistics.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4528780/normal_602a6f5ae95c5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://05b56818-8b0b-4484-a411-4f1234233f1c.filesusr.com/ugd/e49726_e6b033aa360243ac84321c9f02e9354e.pdf?index=trueIn PDF document text
    • http://levuturobawanag.epizy.com/classroom_language_poster.pdfIn PDF document text
    • https://6bb2b61b-82bf-473b-8365-63ddb02ddbdd.filesusr.com/ugd/d55797_e47ef355c5604a2ea8ee1359827ab633.pdf?index=trueIn PDF document text
    • http://pixutuvaw.rf.gd/xogesubojaliralowibadud.pdfIn PDF document text
    • https://d90bda3b-35dd-409f-9d4b-b4a00d881a52.filesusr.com/ugd/b88e3d_9e1ba65ff75844ddb573739f6aff1ae3.pdf?index=trueIn PDF document text
    • https://e924225a-aa46-4bfc-8e56-7341551e1833.filesusr.com/ugd/54dfea_7e1eb179d2c6403788ad628cec5f9474.pdf?index=trueIn PDF document text
    • http://wuzuruwevirelu.rf.gd/sportspower_12-feet_trampoline_with_enclosure.pdfIn PDF document text
    • https://b20aee1f-b1b7-4e4e-be5e-d884e4ece670.filesusr.com/ugd/10e3af_cbf6aaf13a4d4a66a532955eb75596f6.pdf?index=trueIn PDF document text
    • http://zopezotudesod.rf.gd/2ndline_apk_old_version.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d325.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD325 5272 bytes
SHA-256: 806cd9d17cf93b3a7057b6d0bd0f0737ca5b9564fe73c1c297da7c523f4b766a
font_01_sfnt_off0000e4f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4F2 9308 bytes
SHA-256: 802941c87bc913bd7995e6a82956c702e782108da07d268bf547f28a42a285f3