Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c207438fa70e6eb…

MALICIOUS

PDF

80.8 KB Created: 2021-03-20 11:39:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: faa0d37822d2d8a339d062128f69e67f SHA-1: fde09e6cbd34f5dc4196bcd1cd9cb4b1ad45de39 SHA-256: 6c207438fa70e6eb446c82c328ba744287f291b87da4cbad0ea55aa4006a5516
126 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with one specifically pointing to a suspicious domain associated with phishing lures. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The document body, though heavily obfuscated, contains keywords related to competitions, suggesting a lure to a malicious website.

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://jumiwimov.ru/wix?keyword=jan+brett+competition PDF link annotation
    • https://cdn.sqhk.co/xenudipu/geRpicd/streamlabs_change_profile_picture.pdfIn PDF document text
    • https://zevigutuxokalu.weebly.com/uploads/1/3/4/7/134769804/kuxaxir-wigevale-xusizosuli.pdfIn PDF document text
    • https://labufixurugon.weebly.com/uploads/1/3/4/8/134873424/luripabaros.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4461202/normal_6000a7dcd3541.pdfIn PDF document text
    • https://cdn.sqhk.co/pesuxigu/b9M6ggo/avery_label_templates_5660_s.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401697/normal_6022753b1d71f.pdfIn PDF document text
    • https://lafotasenobofow.weebly.com/uploads/1/3/4/6/134675597/fekoronirobofit-borunoso-duturasoderu.pdfIn PDF document text
    • https://dodaxopaz.weebly.com/uploads/1/3/4/8/134865523/jezixuso.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447431/normal_5ff4a98d14e5d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402503/normal_5fcf2dca317d2.pdfIn PDF document text
    • https://cdn.sqhk.co/bemememu/u5hfieg/xotug.pdfIn PDF document text
    • https://fimosezit.weebly.com/uploads/1/3/0/7/130775491/6208946.pdfIn PDF document text
    • https://favigexa.weebly.com/uploads/1/3/0/7/130738696/rinowidigigozot.pdfIn PDF document text
    • https://cdn.sqhk.co/banuluwopote/d5qIggY/promised_land_bellingen_weddings.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452389/normal_60123dd6743ad.pdfIn PDF document text
    • https://zojegidaluvimov.weebly.com/uploads/1/3/4/1/134109086/4085627.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/donarepemi/cfo_duties_and_responsibilities.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c1a2fd3c-e6d2-47a7-8b41-83cc946eb734/6306454696.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/662ce172-36d4-4a12-9321-df8883ba7808/large_print_ukulele_chord_chart.pdfIn PDF document text
    • https://s3.amazonaws.com/belopudevuzuza/google_icon_font_cheat_sheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2670b7a1-effd-4ffd-acd3-d03c60f7fcc5/what_causes_water_to_leak_from_washing_machine.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2aa39323-47ca-4185-ab1f-ca81e59b419d/how_long_is_the_movie_stand_and_deliver.pdfIn PDF document text
    • https://s3.amazonaws.com/vekodupiwarobi/xinidenabaripokadupepaz.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_off0000ff80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF80 5000 bytes
SHA-256: f24dab19873047327d6c8072d6fc3b3c86650b48b4c71d16b188c7f0354d9467
font_01_sfnt_off0001106b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1106B 11356 bytes
SHA-256: 8a1b81dedb2de3af7034e3027edad01956b2cad3f20b73983f6e1eef0f6163ca

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