Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d2484b4e8aaa126…

MALICIOUS

PDF

68.5 KB Created: 2021-02-24 00:58:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 5ed4fdbce43a4ffd307d17f9db6b95e0 SHA-1: 16b7cd61cb4983a5dfdf5d7b9ee7a1152afd9e3d SHA-256: 6d2484b4e8aaa1260a2c8250194c5b1b1a6a694ac4151c1f1dad4d0460e5fc54
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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/wix?keyword=empires+and+puzzles+android+hack+reddit PDF link annotation
    • http://copyrightsupportforlnstagram.com/6851520574jac1p.pdfIn PDF document text
    • http://copytoshka.ru/ck100_key_programmer_manualf20bw.pdfIn PDF document text
    • http://mandarins.space/93940413422nnaan.pdfIn PDF document text
    • http://damvglaz6.xyz/nasuratonuruzovivn0g91.pdfIn PDF document text
    • https://tofibuji.weebly.com/uploads/1/3/5/3/135309424/7892663.pdfIn PDF document text
    • http://meine-gebuhrenfrei.com/rapid_typing_tutor_for_pc5dzb8.pdfIn PDF document text
    • http://submonster.xyz/boxadiwukajabutucw7l3.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://s3.amazonaws.com/wovigebi/linear_and_nonlinear_functions_worksheet_8th_grade.pdfIn PDF document text
    • https://s3.amazonaws.com/bejenosugede/madaxadalisodeb.pdfIn PDF document text
    • http://tigisatobenuwi.epizy.com/adam_lambert_underground.pdfIn PDF document text
    • https://s3.amazonaws.com/jafujasiwetid/45614947630.pdfIn PDF document text
    • https://s3.amazonaws.com/gedexim/barska_biometric_safe_reset_code.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_off0000c217.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC217 5268 bytes
SHA-256: de040f35209a5f8c6eac93cbc23a1a3b27f0dcf79c53dc0d2836d09925c2d808
font_01_sfnt_off0000d3cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3CB 10452 bytes
SHA-256: 049f7eef0653ebef4681cd41574ee66ceff0754b1b96ec3bbdb56dfdb60e0b0f
font_02_sfnt_off0000f757.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF757 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333