Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d2f1a5dab3b9081…

MALICIOUS

PDF

73.6 KB Created: 2021-02-18 19:37:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 43975c58d242985591be36e5d5a24bf9 SHA-1: 7e604bd7f4a2bf141f3326046c008a80438589af SHA-256: 9d2f1a5dab3b9081fc6c53e914782023e6d1cae1ed9dc61a15ec337c64939636
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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.
  • 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://baarspo.ru/wix?keyword=funny+anniversary+poems+for+friends PDF link annotation
    • https://logesili.weebly.com/uploads/1/3/5/3/135389335/fewekanirisuv.pdfIn PDF document text
    • https://cdn.sqhk.co/vasinabew/jbxydjj/cruise_america_denver_phone_number.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366958/normal_5fcb1396b4bcd.pdfIn PDF document text
    • https://cdn.sqhk.co/lakivasulis/je3jfpY/suppository_for_hemorrhoids_side_effects.pdfIn PDF document text
    • https://cdn.sqhk.co/kajipazuto/JheTwhc/37651533620.pdfIn PDF document text
    • https://cdn.sqhk.co/tirekidifole/jbrhZ4q/mini_stroke_in_spanish.pdfIn PDF document text
    • https://jorobeperepi.weebly.com/uploads/1/3/1/8/131856290/9371957.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477167/normal_600c3f7e7e6c2.pdfIn PDF document text
    • https://cdn.sqhk.co/noruwotil/ePidXhg/63042863103.pdfIn PDF document text
    • https://cdn.sqhk.co/pibegufuxova/TzpoCp7/87833024669.pdfIn PDF document text
    • https://cdn.sqhk.co/fuwifemi/f2Bgjwg/pixel_gun_apocalypse_unblocked_unity.pdfIn PDF document text
    • https://cdn.sqhk.co/raxuzuvuluf/eiizjby/is_pac_12_now_app_free.pdfIn PDF document text
    • https://cdn.sqhk.co/xulawajikigi/ighggee/didijelebo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/pazatuv/16982092966.pdfIn PDF document text
    • https://s3.amazonaws.com/tibitexil/18529586391.pdfIn PDF document text
    • http://sefibonep.rf.gd/53050074227.pdfIn PDF document text
    • http://mutawev.epizy.com/mac_spreadsheet_program_free.pdfIn PDF document text
    • https://s3.amazonaws.com/fenatagazise/53322370062.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_off0000e3c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3C7 5272 bytes
SHA-256: 3e103b6a724103d9a707641416d26fb9c9f578ff1968b9c8026a89a24f4939f1
font_01_sfnt_off0000f5b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5B5 10376 bytes
SHA-256: 0d51819b07187a4b3d94ef392f1b382d456a96fab33855340973e8fe27650805

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