Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b8a168d5819be77…

MALICIOUS

PDF

82.8 KB Created: 2021-03-17 22:33:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 53011c5bb1a419f8b6ede350a76cfcd3 SHA-1: 5a894f6723bec421bd5566ecadad345d42e2ac47 SHA-256: 5b8a168d5819be77248e14a2ee23487fc22411b394ca9e1fac9659039f70eb9e
96 Risk Score
Tags
free-cdn-ebook-manual-lure

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 embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • 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
  • 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://zajinet.ru/strik?utm_term=how+to+connect+presonus+audiobox+usb+96+to+ipad PDF link annotation
    • http://xinuvaro.sportsontheweb.net/nuwusalasobaneropaxaf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404308/normal_5fccb1e960579.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428341/normal_60162965bb8b9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412599/normal_60417262e0a08.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415951/normal_5fee82ab433d5.pdfIn PDF document text
    • http://gazupoz.sportsontheweb.net/blockchain_technology_in_logistics.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389599/normal_60096708dd8b1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372076/normal_6017cd3ba0117.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465392/normal_5fdc0f0182550.pdfIn PDF document text
    • http://nokasosozigof.mypressonline.com/36911371009.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487906/normal_60226239e90fe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412394/normal_6001f36016270.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/e6550783-adae-4db8-9f21-92cdd6a34d2b/goxulidasoxire.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/20fdd491-4c07-458f-b4f0-b8ff0bb96819/23930837715.pdfIn PDF document text
    • http://putazitozitom.epizy.com/how_to_repair_speed_queen_dryer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7bd0b415-96b5-4b6a-b99c-47c109bd592f/2011_hyundai_sonata_front_bumper_replacement_cost.pdfIn PDF document text
    • https://0ed30ddb-3df1-4505-9e4e-3e87fc6d20ea.filesusr.com/ugd/f043c1_bb03812056b542cba43a96eaa99b8dd8.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/7dbe46e5-c1cd-4d52-83de-96412c4cd29e/84688062082.pdfIn PDF document text
    • https://6b54b0b2-91db-43cc-88c8-bbc4f7e20b37.filesusr.com/ugd/a773aa_f0850ac9bca2473d8b967b136edc0f69.pdf?index=trueIn PDF document text
    • http://farovosodiwes.atwebpages.com/how_to_change_light_switch_on_hampton_bay_ceiling_fan.pdfIn PDF document text
    • http://safamulidapi.epizy.com/95828496717.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7801a88e-cbfc-4f9a-8e9a-a82fdc31ef63/are_hybrids_expensive_to_fix.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_off000103fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103FD 5604 bytes
SHA-256: 226c33eca1733c9194b3731416fc7390d66dab97c1fee20ee87897d0decada51
font_01_sfnt_off0001171d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1171D 11264 bytes
SHA-256: f5d037c115f841612acab79b367c9fa8c99d89a4b3cc0e2159677cff5042f1bf

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