Malicious PDF — malware analysis report

Static analysis result for SHA-256 b14e1a2268ef9e7d…

MALICIOUS

PDF

77.6 KB Created: 2021-05-30 22:04:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 97b5b5726f36ddf3a395fcc5ae91c83b SHA-1: cb3834daa39d1cd0e9d707faebd58d1faa3bd2fc SHA-256: b14e1a2268ef9e7dffa002240167653055072c150a34cdc270cef4c7bda3495c
156 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating it is a phishing document and hosts a large number of external links, many of which are likely part of a link farm. One of the primary external URIs points to a suspicious domain, 'seumenha.ru', which is likely used to redirect users to malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://seumenha.ru/strik?utm_term=how+to+get+appointment+for+aadhaar+card PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4446915/normal_60285cb5b7860.pdfIn PDF document text
    • https://naloguvobiwulup.weebly.com/uploads/1/3/1/1/131163976/wofopiborupuja-vuwote.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478134/normal_604f5e13ae169.pdfIn PDF document text
    • https://pujapuvefebawu.weebly.com/uploads/1/3/4/5/134581836/xarolojujifovikuzux.pdfIn PDF document text
    • https://vonufire.weebly.com/uploads/1/3/4/5/134596457/29141d21bc.pdfIn PDF document text
    • https://tufelovewojamex.weebly.com/uploads/1/3/4/3/134331554/6349300.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420902/normal_5ff55ba966900.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/2adf7b0e-c83c-4b23-a1b6-fd560c742928/gotogulabovezeraraxeja.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e4cb3f7-e555-455b-9996-732a71b21b53/dell_optiplex_7010_memory_replacement.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dfba842a-07c6-4017-b3c8-f33df7f55c37/15466753680.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/36178750-e2ec-4b97-ad8d-2da0a45ea281/holt_handbook_third_course_answer_key_chapter_1.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/93313ea6-41fa-4991-853e-f4194b4c7096/40415816528.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/21fa7e2a-82f3-428b-8249-a760a9f31ad2/jeep_grand_cherokee_transmission_problems_2019.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef992f01-4979-44a0-87b2-5a86dbe22676/lightning_thief_official_book_trailer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/94d3d7d2-3459-419a-b8be-536c067f3529/why_is_my_furnace_not_blowing_warm_air.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/93073f43-2e07-441f-ab8d-451e78a5d912/51114367848.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f33511ee-399c-42b5-a5e1-79879fd428bb/ridixaloxumolitosa.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e4b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4B3 5200 bytes
SHA-256: 8d53ab8989c88c17fd598cd88fd8b7fca96ece7cccb053652deaa28cc77126bc
font_01_sfnt_off0000f646.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF646 10864 bytes
SHA-256: 2ff18b806651de4699f12a435f4013b447fe7a33ba7a69ab9eea71afbe6f9e35
font_02_sfnt_off00011b3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B3A 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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