Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae62a2966c1a9860…

MALICIOUS

PDF

77.3 KB Created: 2021-05-19 14:52:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: d42cd794297a520bf6575bdc20e2309b SHA-1: dfcec136c6f919547b0eb081d3551a6818b77b4f SHA-256: ae62a2966c1a986014def125525ed2012669b2ff66768da741a12cc5fac0ff5f
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 0.9998

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
  • 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://gimoguvi.ru/strik?utm_term=what+do+guided+reading+levels+mean PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4469375/normal_5fe80a97c92bd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490366/normal_60240383570d1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387932/normal_5fce85fe61c37.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413969/normal_5fef80c2cd92d.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/59a92df9-dd35-454f-a37a-119e4a06cd0d/62615890441.pdfIn PDF document text
    • https://s3.amazonaws.com/figugipopar/aoe_de_che_xanh_full.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1c2e9d9b-c09c-4ebc-9acd-855b611c6ccd/bissell_proheat_2x_deep_cleaner_parts.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e6b928d2-d519-43a2-8507-aea97eb2d355/is_huckleberry_finn_and_tom_sawyer_the_same_book.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/32ade924-aa93-4176-9356-6918673ef588/songs_from_les_miserables_broadway.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/67012aac-db31-43d5-acf5-ec50e263bd90/shark_navigator_vacuum_replacement_parts.pdfIn PDF document text
    • https://s3.amazonaws.com/bisiku/12940416562.pdfIn PDF document text
    • https://s3.amazonaws.com/bipovoromoj/xewumedaxipogugafaxire.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/52fd2561-e3f1-4658-a060-4bd03eef55df/egyptian_symbols_and_meanings_tattoos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f8556647-489d-4a85-9115-a634f815f4fb/how_to_find_coordinates_on_a_map_using_latitude_and_longitude.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b23638e8-77b3-4d5b-abb7-aeff293ac357/gapufafeji.pdfIn PDF document text
    • https://s3.amazonaws.com/widiku/math_symbols_with_names.pdfIn PDF document text
    • https://s3.amazonaws.com/gupawupigawono/67411528578.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_off0000efa8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFA8 5312 bytes
SHA-256: f1846f087ebdeaaf50418a384504af3f021439a0107078ffb21079bf17c1865b
font_01_sfnt_off0001019f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1019F 10844 bytes
SHA-256: 652a7000e41da77ce6a9b7b0bde89ba2a522ff99f7923a6167c7710768864bf6

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