Malicious PDF — malware analysis report

Static analysis result for SHA-256 a193806ffacab6cb…

MALICIOUS

PDF

72.7 KB Created: 2021-02-02 12:18:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 500c4a203b7ffa52f5c3417ab055f5ac SHA-1: 5cd0da999a3f77115d0a721227fa9d5e8ccb248c SHA-256: a193806ffacab6cb507b46eec864cdde4dbe98a00221a7dc17f7c8fb2ec231b7
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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/123?utm_term=acura+mdx+service+manual In PDF document text
    • http://copyright-security-ig.com/7738825852974068.pdfIn PDF document text
    • http://ruzagasaz.iblogger.org/92215330850.pdfIn PDF document text
    • http://meleworofazob.22web.org/likert_scale_analysis_excel_template.pdfIn PDF document text
    • http://crawlmqyu.space/riboj4g1ml.pdfIn PDF document text
    • http://fesupopimos.66ghz.com/liziz.pdfIn PDF document text
    • http://rastet-malysh.ru/saftirik_greg_in_gnl3b7ck.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427282/normal_6012e305d04e4.pdfIn PDF document text
    • http://zulurasovuguloz.66ghz.com/arjun_r_meda_ka_gana_karen.pdfIn PDF document text
    • http://gevixadita.22web.org/rahul_name_tattoo_designs.pdfIn PDF document text
    • http://lufesemi.iblogger.org/27295279524.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vupafigimewex.rf.gd/30528729848.pdfIn PDF document text
    • http://fofuxolisemaxim.epizy.com/windows_defender_windows_10_free.pdfIn PDF document text
    • http://joxepivebafugig.epizy.com/dead_space_3_save_game_100.pdfIn PDF document text
    • http://sakigekoxigukil.epizy.com/ikea_australia_catalogue.pdfIn PDF document text
    • http://tujatubaniza.epizy.com/lapaxebupitogiwonelaj.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_off0000e072.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE072 5200 bytes
SHA-256: 8d8880e1a112ee95fde08c125b593c25dcf03629219d43d474647cc058563450
font_01_sfnt_off0000f211.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF211 10484 bytes
SHA-256: 39698545fe17555b29aff87b11122603949b077e1569b3978bb925697538e47d