Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e3979b6ce992013…

MALICIOUS

PDF

41.2 KB Created: 2020-08-27 20:30:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ab95a1366f9a1b14e6ecdaaf40b3d6f8 SHA-1: 49e98998e35481059bbf19168ea23e87ffd6268d SHA-256: 6e3979b6ce992013a34bf1e4a8e882f4bb75dd185582237ba8890b7a93834a8f
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, indicating an attempt to lead the user to harmful content. The PDF also exhibits characteristics of a link farm, suggesting a broader campaign to distribute malicious or spam content. While no scripts were extracted, the presence of the malicious URL and the ML classification strongly suggest malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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://ttraff.ru/pify?keyword=morning+has+broken+hymn+lyrics
    • http://files.vccrc.com/uploads/1/3/1/4/131452771/1817501.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/3801/4616/files/68519164420.pdf
    • https://cdn.shopify.com/s/files/1/0432/4763/2548/files/53705949875.pdf
    • https://cdn.shopify.com/s/files/1/0438/6465/3984/files/consolidate_excel_worksheets_into_one_workbook_vba.pdf
    • https://cdn.shopify.com/s/files/1/0435/5093/3155/files/monthly_planner_2017.pdf
    • https://cdn.shopify.com/s/files/1/0430/2998/7489/files/rovurisawuzuruzirafawewi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0127/3750/files/joxoxuvurasad.pdf
    • https://cdn.shopify.com/s/files/1/0433/7578/8190/files/68373279711.pdf
    • https://cdn.shopify.com/s/files/1/0438/0635/9713/files/wetidapudofaxe.pdf
    • https://cdn.shopify.com/s/files/1/0437/3184/5271/files/microsoft_ntp_server.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006293.bin
3ed6a979233df4555bc2255ff0aeec79c7a28084dd0af6135277d0ad7c7c6524		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6293 5524 bytes
font_01_sfnt_off00007544.bin
a07ef6b49bce7caecbefd2752ed6b82f36e7a1e4ca2b3357f544ec384afdf1dd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7544 10320 bytes

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