Malicious PDF — malware analysis report

Static analysis result for SHA-256 edb23fbe7ad96b1f…

MALICIOUS

PDF

84.1 KB Created: 2021-05-03 12:19:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: c07be836d21ea096ae1113f902c12f6f SHA-1: 74041b0ee942a8b5342f8c06f6b23df93b44e5ad SHA-256: edb23fbe7ad96b1f9aa121d16feb15c7cd5fb507afa8f98e928a0d2334fc787e
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to disposable domains and are associated with link farms, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links are consistent with techniques used to deliver malicious content or redirect users to phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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
  • 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://soxebez.ru/strik?utm_term=samsung+galaxy+a10e+case+metropcs PDF link annotation
    • http://pesuloduf.medianewsonline.com/24172335816.pdfIn PDF document text
    • https://cdn.sqhk.co/miviluwulux/CxjcRic/56196142869.pdfIn PDF document text
    • http://lotukaguw.sportsontheweb.net/74953887570.pdfIn PDF document text
    • http://flebolog24.com/how_do_i_connect_my_swann_security_to_my_wifitq1g1.pdfIn PDF document text
    • http://aycotoro6.xyz/20650083120mx38.pdfIn PDF document text
    • https://kabawerabava.weebly.com/uploads/1/3/0/7/130774965/40d15afd536991.pdfIn PDF document text
    • http://snatural.space/275880404111surx.pdfIn PDF document text
    • http://alphabitx.com/gimepupi3nr1w.pdfIn PDF document text
    • http://reactivaperu-viabcpi.com/gepujodekrxjvx.pdfIn PDF document text
    • http://rodsfish.club/norton_anthology_of_short_fiction6cscf.pdfIn PDF document text
    • http://bowuvudofi.scienceontheweb.net/aparato_digestivo_unam.pdfIn PDF document text
    • https://cdn.sqhk.co/fopikudapom/gieOhfy/fix_my_car_meaning_in_bengali.pdfIn PDF document text
    • http://laserisesiseno.getenjoyment.net/fusionner_deux_en_un_seul_mac.pdfIn PDF document text
    • https://cdn.sqhk.co/puxedimuwo/dmQFVwd/bouncing_ball_after_effects_template.pdfIn PDF document text
    • http://romeita.space/munchkin_epic_ruless12di.pdfIn PDF document text
    • http://honbiz.pro/maxtor_onetouch_4_plus_manualmbqm7.pdfIn PDF document text
    • https://cdn.sqhk.co/wazafanez/tExCjjv/feladubakem.pdfIn PDF document text
    • https://cdn.sqhk.co/rexixugepir/ligvpHZ/playroom_decor_ikea.pdfIn PDF document text
    • http://xrootunited.com/kaninofoxejarovash7z82.pdfIn PDF document text
    • https://bolomekedi.weebly.com/uploads/1/3/4/7/134769876/424e80b6cb6c5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://b67fa923-03b4-4d21-b555-95ff628d7525.filesusr.com/ugd/1d4b90_90a8da4fcb514d67b31c4459a384a1b1.pdf?index=trueIn PDF document text
    • https://6762652a-e869-40f3-960d-1446d4066230.filesusr.com/ugd/55e6b1_c57f7e23657d4a6bad32278d778dbaf4.pdf?index=trueIn PDF document text
    • https://321e46d8-a3e9-4523-905f-b0dcd1dcb7ef.filesusr.com/ugd/29fbc3_64e36f5fe5fd4b2c9e4d8ff477a22c1c.pdf?index=trueIn PDF document text
    • https://8d94caac-80d5-4f6d-a73a-04ed47837dc1.filesusr.com/ugd/585b1d_df75d4fc41a34b56b6d64faac99c3632.pdf?index=trueIn PDF document text
    • https://03ca3561-abfe-48ca-9b59-b1b2b77f8126.filesusr.com/ugd/1af49e_cb050dcaccd449f8ba38d31b2336862d.pdf?index=trueIn 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_off000109a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109A5 5720 bytes
SHA-256: 45596a727705301122624f49cb094f481870c418ea4b1ed99b2e24d97a3fe4a6
font_01_sfnt_off00011d19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D19 10488 bytes
SHA-256: 3d0b6341cf8e8775f74db1f578641600f59aeed098fc6d653cdd078b67cc1da2

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