Malicious PDF — malware analysis report

Static analysis result for SHA-256 54c0590a2af48ac6…

MALICIOUS

PDF

68.2 KB Created: 2021-02-27 01:45:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 605d053bba8870f61364695e9afb2641 SHA-1: c3ec959625ec8b2abd53e5851158bf06d20a623e SHA-256: 54c0590a2af48ac68a98b12eedb20aaa201a3d916340396cfc8201099af0bbec
244 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 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.
  • 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/wix?keyword=battle+of+the+books+2019+2020+howard+county In PDF document text
    • https://cdn.sqhk.co/gukovafax/bjfeSO2/fizasad.pdfIn PDF document text
    • https://zatazonikafude.weebly.com/uploads/1/3/4/3/134340422/7abe2e50.pdfIn PDF document text
    • https://cdn.sqhk.co/ruxuvedije/dgfF3hj/finger_guns_touching_meaning.pdfIn PDF document text
    • http://remontnatali.ru/free_autocad_floor_plan_dwgnnmb8.pdfIn PDF document text
    • http://migerov.xyz/vodebevotue2mi3.pdfIn PDF document text
    • https://jifibixivedud.weebly.com/uploads/1/3/6/0/136082986/2db99b7c275.pdfIn PDF document text
    • https://zesakexe.weebly.com/uploads/1/3/5/3/135314388/radolipovufuja-nomej.pdfIn PDF document text
    • http://fdvsefwfrw.space/colliers_minneapolis_industrial_reportwvw3k.pdfIn PDF document text
    • https://xevibobi.weebly.com/uploads/1/3/4/6/134683071/d6b512fda0.pdfIn PDF document text
    • https://cdn.sqhk.co/vejuwipem/b32idge/merge_super_car_apk_download.pdfIn PDF document text
    • https://cdn.sqhk.co/jepipovi/d4jfshh/47633238232.pdfIn PDF document text
    • https://cdn.sqhk.co/wejagamewo/68Bwn5C/press_brake_tooling_film.pdfIn PDF document text
    • https://bumokodujexub.weebly.com/uploads/1/3/4/5/134595190/60605.pdfIn PDF document text
    • https://cdn.sqhk.co/winelolibug/aa8zpgj/vexogenifijonilanorini.pdfIn PDF document text
    • http://italylife.pro/dokapon_kingdom_ps2_isort9a9.pdfIn PDF document text
    • https://bobujiwa.weebly.com/uploads/1/3/1/0/131070874/banugimumo.pdfIn PDF document text
    • http://lnstagramsupportingcenter.com/kenmore_dryer_repair_manual0yrs4.pdfIn PDF document text
    • https://cdn.sqhk.co/pufowuvikij/ejgijhI/find_my_iphone_8_digit_code.pdfIn PDF document text
    • https://cdn.sqhk.co/jakatote/GhevKz9/world_at_arms_hack_download.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000cc47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC47 6040 bytes
SHA-256: 79c6a0ea010ac4a5e5484d85fde4486108e3db5fd82a74dcada4a9ce35067da0
font_01_sfnt_off0000e0eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0EB 9968 bytes
SHA-256: 5e7295188649b3b2a21e6b6dc92fc6540211458bc0da1e17627bf1d769893101