Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b6a85aaf4930644…

MALICIOUS

PDF

83.5 KB Created: 2021-04-03 02:00:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 90bc75a72bf4c64a855dc0a095b47ad2 SHA-1: ee6991ae978f07c78d7852221c25871ca729be0a SHA-256: 2b6a85aaf49306445a52e6d49a07f07f0c7956561d5d8cc48b0a357c3f85362f
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9967

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://pelibifir.ru/strik?utm_term=arduino+uno+length+mm PDF link annotation
    • https://cdn.sqhk.co/virurewev/eSr98A9/fungal_ear_infections_in_adults_treatment.pdfIn PDF document text
    • http://rerubin.space/63185863628wpavf.pdfIn PDF document text
    • http://triple-doska6.club/vuwesubio675x.pdfIn PDF document text
    • https://lutatodu.weebly.com/uploads/1/3/4/6/134697406/sizekirojudabamur.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390660/normal_6052a9a307498.pdfIn PDF document text
    • https://cdn.sqhk.co/xakatikakizi/c1Eieig/kindle_formato_libri.pdfIn PDF document text
    • http://rewita.fun/burger_king_chicken_sandwich_calories_no_bunkq5yj.pdfIn PDF document text
    • https://cdn.sqhk.co/rurufimibiwe/8jjXJhh/launcher_10_pro_apk_free_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471513/normal_5fecc75340cd6.pdfIn PDF document text
    • https://tezijiso.weebly.com/uploads/1/3/4/6/134690371/fc91f469754ce1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406170/normal_5fe2d811971b1.pdfIn PDF document text
    • http://futotesu.iblogger.org/minimum_percentage_of_reinforcement_in_beam_as_per_aci_318.pdfIn PDF document text
    • https://cdn.sqhk.co/gesimefav/jeILGzq/pimuluru.pdfIn PDF document text
    • https://xavitutasufeja.weebly.com/uploads/1/3/4/6/134669981/1a55d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465131/normal_602f336ad579b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445864/normal_5fc76524cbc22.pdfIn PDF document text
    • https://cdn.sqhk.co/jirudumom/BYgijeu/lifeafter_resident_evil_outfit.pdfIn PDF document text
    • http://sobakin.space/driver_certificado_digital_serasa_experiannhdob.pdfIn PDF document text
    • https://pifujikis.weebly.com/uploads/1/3/4/8/134875168/pejapofis.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/kavugusepe/cracked_screen_wallpaper_android.pdfIn PDF document text
    • https://s3.amazonaws.com/muwomapotumugi/wunenaneloxitadilaxil.pdfIn PDF document text
    • http://sewitowapib.epizy.com/dd_rules_cyclopedia_amazon.pdfIn PDF document text
    • http://raxezebob.rf.gd/breve_historia_del_neoliberalismo_david_harvey.pdfIn PDF document text
    • https://s3.amazonaws.com/kibavutibeved/just_2_words_level_1440.pdfIn PDF document text
    • http://wazinupizut.epizy.com/gafovuladis.pdfIn PDF document text
    • https://s3.amazonaws.com/bivanud/14375788589.pdfIn PDF document text
    • https://s3.amazonaws.com/xazarujokemus/88115236280.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_off00010be5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BE5 4840 bytes
SHA-256: fb31ccdace868fdc83cd167564e27c4b54300cda764f34348d02dedbaf7e7644
font_01_sfnt_off00011c2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C2C 10684 bytes
SHA-256: 3b35684c0d965ff980b8b48c3ec4cb5be051aea994a363cef92997d39119cfc1

Open this report in the interactive analyzer, or submit your own file for analysis.