Malicious PDF — malware analysis report

Static analysis result for SHA-256 7125e003ad69e405…

MALICIOUS

PDF

76.5 KB Created: 2021-04-02 04:36:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ee6e02219712d6154ac23453c97b0ffb SHA-1: d5f1d21613dd9adc8be66049607c1256770d8306 SHA-256: 7125e003ad69e4050dafcd69ddf5dbcee11066339eaee20b4a23a5496d25b8f9
96 Risk Score

Malware Insights

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

The file was detected as a malicious PDF by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The embedded URL points to a suspicious domain, suggesting a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are strong indicators of a malicious document, likely used as a lure for initial access.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://jottigo.ru/strik?utm_term=what+is+a+biological+predisposition+mean
    • https://cdn-cms.f-static.net/uploads/4374545/normal_60431e3b50c39.pdf
    • https://juwarojolajekol.weebly.com/uploads/1/3/4/1/134108785/8045725.pdf
    • http://domobifotuza.sportsontheweb.net/49482278083.pdf
    • https://ronunute.weebly.com/uploads/1/3/1/0/131070227/bizefize.pdf
    • https://wekupadafar.weebly.com/uploads/1/3/5/3/135315244/pewezevim.pdf
    • http://kazimibi.getenjoyment.net/44791127235.pdf
    • http://tareworig.mywebcommunity.org/40774840951.pdf
    • http://fawikenaxalu.scienceontheweb.net/91449425932.pdf
    • https://cdn-cms.f-static.net/uploads/4411921/normal_6056bed62b9eb.pdf
    • https://dowadumusisek.weebly.com/uploads/1/3/4/5/134521262/kewinigox-vigazu-sawopeb-kotafiruvajuxib.pdf
    • https://static.s123-cdn-static.com/uploads/4383138/normal_5fff5e80f271c.pdf
    • https://static.s123-cdn-static.com/uploads/4482018/normal_6004907fbdad9.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://79d8ee67-2172-45f8-9737-086b37aa5bdf.filesusr.com/ugd/2ab2ae_e29e94d140d746769a408318cb3063d9.pdf?index=true
    • https://s3.amazonaws.com/panokojol/dupenaroj.pdf
    • https://s3.amazonaws.com/fazujo/character_strengths_and_virtues_handbook.pdf
    • https://uploads.strikinglycdn.com/files/ca9c4e4c-3693-4122-9ea4-1a4134bb79f9/6711507052.pdf
    • https://s3.amazonaws.com/voropa/wulitetusaposam.pdf
    • https://s3.amazonaws.com/petuzutemixuvod/9278547725.pdf
    • https://s3.amazonaws.com/sojaxub/10641772925.pdf
    • https://694dae7a-2033-4a59-8b06-91ff4eec0774.filesusr.com/ugd/e1d58f_0ca13dceba074df2a59fe849fa5d193e.pdf?index=true
    • https://uploads.strikinglycdn.com/files/1d6ecdcf-e3ec-4798-aa32-88ec58b056c0/wireb.pdf
    • https://uploads.strikinglycdn.com/files/8229879b-a80a-49af-84d1-c3bfdcaf6b53/tractor_john_deere_ground_loader_12v_peg_perego.pdf
    • http://wutejaxevewef.myartsonline.com/what_are_the_quietest_wiper_blades.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ecb3.bin
f3359fc848a0e00670b5336e50d2532bece84d8787aa4a8bf51fab7eaa3c9b08		 pdf-font-stream PDF embedded font (sfnt) at offset 0xECB3 5640 bytes
font_01_sfnt_off0000ffc0.bin
dc54abe17ad7d3f4454cc50725f9a06f5cbcd182cbba23c801f9b1924cfb7854		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFFC0 10836 bytes

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