Malicious PDF — malware analysis report

Static analysis result for SHA-256 0dd2134d5835c10d…

MALICIOUS

PDF

74.7 KB Created: 2021-05-08 23:42:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 265252a741444df47fbde384cdee4e44 SHA-1: 595ff9511d93f4398f19ac7034204469a7644493 SHA-256: 0dd2134d5835c10d08ffe355967bf89dd7cbc7c5f5b00d68391cc753936b2561
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by multiple heuristics, including a critical alert for linking to known malicious redirector infrastructure. The embedded links, such as 'https://crophysi.ru/strik?utm_term=jitterbug+smart+2+phone+at+best+buy', are designed to lead users to potentially harmful sites. The ML classifier also strongly indicated maliciousness, supporting the conclusion that this document is part of a phishing or malware distribution campaign.

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/strik?utm_term=jitterbug+smart+2+phone+at+best+buy In PDF document text
    • http://pifedalune.medianewsonline.com/xisopoxemotoreteturesi.pdfIn PDF document text
    • https://cdn.sqhk.co/retakabif/jcxggib/35886629468.pdfIn PDF document text
    • https://cdn.sqhk.co/nonuripot/jeiahgY/31320299014.pdfIn PDF document text
    • https://cdn.sqhk.co/rosubeno/KXhjhbd/slot_racing_car_sets.pdfIn PDF document text
    • https://cdn.sqhk.co/kogewole/jbpgwXk/powufi.pdfIn PDF document text
    • http://beautysss.site/how_to_trade_stock_options_for_beginners_youtubepadhj.pdfIn PDF document text
    • https://cdn.sqhk.co/bazexolareja/i6Njdhb/13373273823.pdfIn PDF document text
    • https://cdn.sqhk.co/xidizizo/qgjcbhd/23859213517.pdfIn PDF document text
    • http://instgramcopyrightdispute.com/hcl_2019_annual_report02z5b.pdfIn PDF document text
    • https://cdn.sqhk.co/duloputemab/L6vojdc/vewebekijej.pdfIn PDF document text
    • http://sabovibin.medianewsonline.com/rimujunokinirodaxudepi.pdfIn PDF document text
    • http://goloszauniver.fun/tuteselosdkmmf.pdfIn PDF document text
    • https://cdn.sqhk.co/bafesugoguwi/W53CqAF/net_optimizer_optimize_your_internet_speed.pdfIn PDF document text
    • https://cdn.sqhk.co/nebemina/cKLGaqU/gajuzuzo.pdfIn PDF document text
    • https://cdn.sqhk.co/petebeki/gcCgf4w/guvorojogurizaza.pdfIn PDF document text
    • http://iblack.space/bahubali_tamil_movie_mp4_songsvxgmd.pdfIn PDF document text
    • https://cdn.sqhk.co/durotula/8n3YIUJ/zombie_evil_2_apk_mod.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/takurugilij/dls_19_brazil_profile._dat.pdfIn PDF document text
    • http://niwurekatexo.atwebpages.com/85675319786.pdfIn PDF document text
    • https://s3.amazonaws.com/sizabo/asus_p8z68-v_pro_bios_windows_10.pdfIn PDF document text
    • http://lufiwivumijej.myartsonline.com/papuxemifatinumagiguvafib.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_off0000e59b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE59B 5564 bytes
SHA-256: 02e48a7feba32ebf24f17e017b33593b98b130e42b8bd87a2ebd4a14c2c95bd6
font_01_sfnt_off0000f860.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF860 10812 bytes
SHA-256: 14e60c34dc2969cb45ee9d425d3efe120303ede8437c19020d446227f974aebd

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