Malicious PDF — malware analysis report

Static analysis result for SHA-256 66026630246668ae…

MALICIOUS

PDF

62.0 KB Created: 2020-11-11 12:57:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 604e3df1939d226c37650619ea342933 SHA-1: d389eaf22d6acc1e7382bd0a309735915f60e7bc SHA-256: 66026630246668aedebcd50d80a76130650b2b4772bdfe5187324b01992e90e1
214 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with a critical heuristic firing for PDF_SEO_LINK_FARM indicating a link farm. One of these links, https://traffmen.ru/strik?keyword=eberron+lightning+rail+map, is flagged as a malicious redirector. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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
  • 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.
  • 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.
  • 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://traffmen.ru/strik?keyword=eberron+lightning+rail+map In PDF document text
    • https://kokexofagisukop.weebly.com/uploads/1/3/2/7/132710589/wefabetesiwa-vexipovaxoki.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/780ada12-edae-492e-8d44-d2bdb0bf3d44/english_grammar_workbook_for_dummies.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/050b4e5d-0525-487b-a06d-cf8f7a68bcc5/objetivos_de_una_pizzeria.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6370fa8d-65ef-4d8d-846d-56d6e27d270e/ninenixubadolimiwinexek.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d3d399a-1b80-4dc0-8855-6e70c4eb224b/harry_potter_printables_book_covers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4115ff17-9b54-4fd4-8df7-b97db6e3588b/ximolipode.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a306d0ed-2ae6-44e2-9805-69542493f309/scrub_a_dub_dub_rhyme.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d2653a7-5f1f-425b-bc9b-e5a228456d77/ginuporibasepuvew.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b71ba58b-d729-4933-a102-5fa95c6e2dee/north_carolina_state_standards_science.pdfIn PDF document text
    • https://s3.amazonaws.com/pazovugal/twins_legends_club_amenities.pdfIn PDF document text
    • https://s3.amazonaws.com/gajakelegeza/what_does_chestnut_wood_look_like.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_off0000ab4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAB4C 4940 bytes
SHA-256: 7b384b7ec850f9fb81a92e41b82b67b8f083b65994ea380a0cf709bbba484637
font_01_sfnt_off0000bbde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBBDE 9792 bytes
SHA-256: 183d8d7672f83996e76cfbb3b51a44aff78cd49afda8a538e99cd0a991acef68
font_02_sfnt_off0000dd86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD86 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

Open this report in the interactive analyzer, or submit your own file for analysis.