Malicious PDF — malware analysis report

Static analysis result for SHA-256 08add3cdb95ddb12…

MALICIOUS

PDF

73.8 KB Created: 2021-03-02 14:41:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 6caa73266e12b924a1b2cff7e415dacc SHA-1: 8d9a6393429c0acc962e70367171547f0887e63b SHA-256: 08add3cdb95ddb12997af1c3281cd4664b3cf330b65c407e5aa6393f8cd1dd0a
204 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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://crophysi.ru/wb?keyword=cva%20wolf%20209%20magnum In PDF document text
    • https://cdn.sqhk.co/waxusuxagaki/gdgdY1i/99958524738.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412573/normal_5fcfb300f054c.pdfIn PDF document text
    • http://tejovotemikodes.getenjoyment.net/batux.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445881/normal_601da7d59f5f6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487927/normal_6029ded23f682.pdfIn PDF document text
    • https://cdn.sqhk.co/rurufimibiwe/UCJnhgx/usa_network_new_shows_2020.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467030/normal_5fdbb71091e00.pdfIn PDF document text
    • http://dezuforupom.iblogger.org/96770203719.pdfIn PDF document text
    • https://cdn.sqhk.co/xidatelo/jgdLigp/rimidiral.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385647/normal_5fcf699c2828d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404750/normal_5fc74c08cba97.pdfIn PDF document text
    • http://komaxinatobofe.medianewsonline.com/shadowrun_weapons_guide.pdfIn PDF document text
    • http://sizegivip.22web.org/bihar_tet_science_question_paper_2011.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479904/normal_5ffc751c3a713.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fuxunowelujuxa.atwebpages.com/82052347021.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_off0000e048.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE048 5300 bytes
SHA-256: 5224c8ab8cc684735a67336cea4370db4c15f536744dbf644582fe755b3a806f
font_01_sfnt_off0000f25a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF25A 11480 bytes
SHA-256: aa52678d120f4f0dbc07883f22f4b96578ef2cb93ca9b6d7c6375b39e7e863d1

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