Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e3747026cb04a06…

MALICIOUS

PDF

69.3 KB Created: 2021-03-11 03:15:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 43ca9aa6f779b75be0a5a8256140a2d1 SHA-1: 43f2f07c71da7f44f3ec0b3ed92db58f97ef2761 SHA-256: 5e3747026cb04a06d13ee9f79262649f11f2b8609ec7079e58c1ce644891961b
126 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs, with one specifically identified as a potential phishing or malware distribution site. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, appears to be a lure related to financial investments, likely to entice users to click on the malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://maypoin.ru/strik?utm_term=how+do+i+invest+in+money+market+funds PDF link annotation
    • https://kaposabebozof.weebly.com/uploads/1/3/4/4/134466843/038f39c7b94.pdfIn PDF document text
    • https://cdn.sqhk.co/kusamika/icgjQhd/cooking_fever_hack_ios_2019.pdfIn PDF document text
    • http://pewodebepefawi.scienceontheweb.net/netgear_n300_c3000_manual.pdfIn PDF document text
    • https://cdn.sqhk.co/kefekawit/gjSs5jg/70391310397.pdfIn PDF document text
    • http://wefilevazobakeb.mypressonline.com/32077584743.pdfIn PDF document text
    • http://latitekiwa.scienceontheweb.net/roku_2_xd_specs.pdfIn PDF document text
    • https://zomoxiwoginu.weebly.com/uploads/1/3/1/6/131637743/velusopuvek.pdfIn PDF document text
    • https://cdn.sqhk.co/momujolo/KDhbs0h/escape_game_50_rooms_2.pdfIn PDF document text
    • http://begimewabifax.getenjoyment.net/81249476873.pdfIn PDF document text
    • http://luwogexejel.getenjoyment.net/basizamibadakor.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://9fc80a0e-b25b-4135-afeb-9811a1ea6bf8.filesusr.com/ugd/91e123_1a65b7a81ad94cd99da1968b1c48a77b.pdf?index=trueIn PDF document text
    • https://d427386d-3434-45d9-8802-370857a594f4.filesusr.com/ugd/accd1f_ca02e77a18c3448cb5b1f85946c2b698.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tamobalasu/acido_base_quimica.pdfIn PDF document text
    • https://s3.amazonaws.com/vososasoxumete/58239756071.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d97df880-58e3-43ac-b8ed-1fcbad29e925/volipitipanef.pdfIn PDF document text
    • https://f1c0478e-57b3-422a-b8eb-433964b677d2.filesusr.com/ugd/16c17d_57c14dc2dd9d47528adfa4ca8f84035c.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a968676-c6aa-42e3-b78a-3d9b019663fc/how_do_i_know_if_my_ipod_shuffle_1st_generation_is_charging.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/008c489d-5e4a-4764-a73d-965e0ea95432/sas_array_do_over_numeric.pdfIn PDF document text
    • https://45e41439-46a4-4c97-84f0-155cfeda4cef.filesusr.com/ugd/9d7ad9_501e5191da89440aa829a0be495a07b9.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/datarofapakil/42948170198.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/335bcb58-ae81-4eb2-bbfb-afa856658452/cfa_level_1_exam_results_date.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/443a72a2-2445-4864-90b9-2d9deff0f148/44940318043.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_off0000d024.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD024 5300 bytes
SHA-256: 7cb1d75df3c891556247122898a6067db97933d564287964c6ab1f90adab3bad
font_01_sfnt_off0000e232.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE232 10408 bytes
SHA-256: c6fd798f7a519f6fb2a2b277ff5daf10d502bb14d4edceb592a9eb7018920525

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