Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2834dab82b2eedc…

MALICIOUS

PDF

64.8 KB Created: 2020-10-26 01:04:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 85beed2db0a1497fdd2d622b3af23a6e SHA-1: 9911fc89375007af526d415469b58245b38bf85f SHA-256: f2834dab82b2eedce78fdbbabac2d25068cfc80590003607487ff8f591f799bd
94 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The embedded URL `https://cctraff.ru/123?keyword=insulina+humalog+lispro+bula+pdf` is the primary indicator of malicious intent. While no scripts were explicitly extracted, the PDF structure and the presence of a malicious URL suggest it's designed to lure users to a harmful site, potentially for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://cctraff.ru/123?keyword=insulina+humalog+lispro+bula+pdf In PDF document text
    • https://nulixedupalaz.weebly.com/uploads/1/3/0/7/130739510/sokakerawirexisepuj.pdfIn PDF document text
    • https://ditiwudo.weebly.com/uploads/1/3/1/4/131452947/7057266.pdfIn PDF document text
    • https://bozofuki.weebly.com/uploads/1/3/4/3/134322044/metobaguwiveni_woborozutugazib_lutidazawuv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366964/normal_5f8745397464e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403822/normal_5f92990605e8c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383571/normal_5f8c12b04eb78.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388824/normal_5f8e78dc6266e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391621/normal_5f90e4de54b2b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/4324/4200/files/20475649610.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/6571/3055/files/golden_goose_catalina_sales.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/3272/2599/files/temoxuxovemagenurux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8118/0354/files/lekulizijomasowisip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8147/5267/files/cliftonstrengths_for_students.pdfIn PDF document text
    • https://s3.amazonaws.com/loxopudizus/sevamevi.pdfIn PDF document text
    • https://s3.amazonaws.com/duzexefemosaxe/batalujukawufevozijurozu.pdfIn PDF document text
    • https://s3.amazonaws.com/liwafo/cardiotoxicidad_por_quimioterapia.pdfIn PDF document text
    • https://s3.amazonaws.com/gidibesuxi/78218197702.pdfIn PDF document text
    • https://s3.amazonaws.com/vukusa/zinovinasosimitotin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dae10aad-06c0-4662-81d6-19d0af9f86c2/nerevomopamumisumixun.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/abeeca2f-72e9-4920-b705-0286cfd63d32/44403910015.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3cc1e7b5-fb21-49b0-b0cf-0d4e69e74c19/43571717674.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/31bd30eb-ea00-4bb1-ae86-8efb9395c6ea/9313198901.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f857712c-b4bc-4d74-9b54-399da80a6765/excel_kasa_defteri.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_off0000bc29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC29 5532 bytes
SHA-256: 46927a7d0c80235c8327b82d6a27133c6216c35bef2e693d9b4193d65dc96f2a
font_01_sfnt_off0000cebd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEBD 11740 bytes
SHA-256: 08a7161d81fc5b0460ee5a75b8ff886df953dc6dd0495750e788875752f4df54

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