Malicious PDF — malware analysis report

Static analysis result for SHA-256 010354935b6abae9…

MALICIOUS

PDF

79.7 KB Created: 2021-04-25 19:06:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 4a9de1f5a788bae55d1cb038178087ec SHA-1: 727b6e020ba188e7f58edef3794892e72e64dfa8 SHA-256: 010354935b6abae934b8096cb2cde1ae115f98cdca82fb1500aa1347762ed0f7
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF document contains a heuristic firing for an external URI pointing to 'fokemale.ru', suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were extracted, the presence of a suspicious URL within the document body, combined with the detection verdicts, points to a phishing lure designed to redirect users to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://fokemale.ru/strik?utm_term=presidential+succession+act+of+1947+list PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4420238/normal_5fe00d2a9d4db.pdfIn PDF document text
    • https://cdn.sqhk.co/gadewekunel/chchjXb/cut_object_in_half_3ds_max.pdfIn PDF document text
    • http://strapslap.online/abidjan_principlesy5mpq.pdfIn PDF document text
    • http://robertferrell.net/23742584556596i2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457296/normal_6062a94f62012.pdfIn PDF document text
    • https://cdn.sqhk.co/vobipibomuk/Uhigcjf/3d_heart_drawing_on_paper.pdfIn PDF document text
    • https://cdn.sqhk.co/sebutarukaw/cp2Lqev/great_clips_near_me_open_now.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445343/normal_5fc5e51a2dd93.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447251/normal_601bad025558e.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/26d5cb45-4c6c-4071-b4e8-86f22002fedf/pioneer_avh-x4700bs_bluetooth_not_working.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3abd962c-01ab-4be5-ba98-6abffd21a0a6/55847364208.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/14ed4679-2d39-420c-92fb-27ee2a7f5ca7/detox_program_for_weight_loss_in_nigeria.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/280bf4d2-f18b-446f-b488-49ddbbd8b0ac/solomon_lesser_key.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60fac4cd-5f76-4b04-b408-a7b414b3fa3d/36378210183.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ff0d1c6-9f08-46b4-bae8-7721d968f2f4/why_isnt_my_keyboard_backlight_working.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5cad6861-d47e-4238-992d-7dc5fe9eafc1/verotitod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f6061e6-8094-4561-813f-909e3b4b2c61/putavapo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d2abcf8-6356-4f95-a192-2a9ede49d64d/florida_realtors_commercial_lease_form.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e0ef994-8ad6-4121-8529-4fe4cdeca90f/amana_top_load_washer_not_working.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e74ee39-a554-4a65-b276-2a0fe8b6c254/25423082644.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2945d89d-a30c-48ec-af43-07f46d659411/freud_civilization_and_its_discontents_summary_sparknotes.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_off0000f81a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF81A 5392 bytes
SHA-256: 0aff4959b29f3b889ed77f335578129bcbf5367aeec213a9e3e4d8d783334b9a
font_01_sfnt_off00010a85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A85 10900 bytes
SHA-256: 777271562d6e34a7037d9d21d0613d226d8783d10b2ec130ade49f4e277bf35b

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