Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0b5d42e753150ac…

MALICIOUS

PDF

65.4 KB Created: 2021-03-10 01:23:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 608a08afba280b29b2cd7e7103191d58 SHA-1: 2e0832fa90e79d5dbc3cd31fc0d3298c7a85d036 SHA-256: b0b5d42e753150ac28c3787a271c9d0f879e42fa0bff8cf8244021b4b80ab883
184 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8395

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
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://lozipotod.ru/award?keyword=isometric+sketch+paper+pdf PDF link annotation
    • http://gudibetujem.iblogger.org/zekasusebovofadidorim.pdfIn PDF document text
    • https://fixupusojorulu.weebly.com/uploads/1/3/4/4/134438709/8041150.pdfIn PDF document text
    • http://ziratonis.iblogger.org/dwi_nhtsa_manual.pdfIn PDF document text
    • http://lopekojupapo.22web.org/scientific_paper_format_template.pdfIn PDF document text
    • https://fugebigejajifad.weebly.com/uploads/1/3/1/4/131406613/6bcc6c094c.pdfIn PDF document text
    • https://tuxupifogufo.weebly.com/uploads/1/3/4/5/134594750/9a8e3.pdfIn PDF document text
    • https://binazinir.weebly.com/uploads/1/3/4/1/134108718/zotix.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dofagefa.epizy.com/waxiba.pdfIn PDF document text
    • http://ralipuzejemozuz.epizy.com/nasipoxenalo.pdfIn PDF document text
    • http://releboxodaw.rf.gd/what_battery_for_baby_g_shock.pdfIn PDF document text
    • http://napepubopesov.rf.gd/hp_elitebook_2560p_memory_upgrade.pdfIn PDF document text
    • https://d115d978-d96a-40c8-9764-5d959708fc35.filesusr.com/ugd/436160_0cfcb19987224aa7a74052534969e1f4.pdf?index=trueIn PDF document text
    • http://lajirobodogew.epizy.com/3144766047.pdfIn PDF document text
    • https://d89a15f7-21b5-45f0-b9b4-bc5b7be68842.filesusr.com/ugd/18e821_5df057aa644549fe8cfbf5637812905d.pdf?index=trueIn PDF document text
    • https://64f1e6a9-4530-4009-9f9b-67b91dd69f79.filesusr.com/ugd/76b6de_fd63fcc932c2425eb53299f2c2bc1177.pdf?index=trueIn PDF document text
    • http://kixelekiteduxaz.rf.gd/sasiruwusisorezajobopizir.pdfIn PDF document text
    • https://s3.amazonaws.com/daraniwekamidir/42795123105.pdfIn PDF document text
    • https://s3.amazonaws.com/potofaw/cadillac_cts_v_performance_specs.pdfIn PDF document text
    • http://xatesowogexiwu.epizy.com/teachers_guide_math_9_unit_1.pdfIn PDF document text
    • https://s3.amazonaws.com/mefonevimimix/android_10_release_date_for_mi_a2.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e902.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE902 5044 bytes
SHA-256: 33c0312077239c997ae16e0314c5b69851adb753b973c60ab16bca137f846914

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