Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7f29516167ee985…

MALICIOUS

PDF

69.2 KB Created: 2021-01-26 14:46:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: 02dc23161beafb6aca900119593de265 SHA-1: 73bc2da0ce670ebf750f1b6a11261475839240d9 SHA-256: d7f29516167ee98589ff75e84b02901056562eaaccbc098f6003f4d6dfe5411f
126 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating it is likely a phishing or trojan distribution attempt. The document contains numerous embedded URLs, many of which point to disposable domains and appear to be part of a link farm designed to trick users into downloading software, such as game mods. The presence of external URIs and the overall structure suggest an attempt to deliver potentially unwanted or malicious applications.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://seumenha.ru/wb?keyword=download%20pocket%20mine%203%20mod%20apk PDF link annotation
    • http://podarokinsta24.online/fifa_world_cup_2019_live_streaming_channels5p4ic.pdfIn PDF document text
    • https://cdn.sqhk.co/tikugosedik/yhbigxN/flying_hero_rescue_survival_2019_superhero_actions.pdfIn PDF document text
    • http://reetodo.online/perfect_slice_mod_apk_revdl4pwm9.pdfIn PDF document text
    • http://frontglass.xyz/legacy_of_discord_vip_guide6sny0.pdfIn PDF document text
    • http://livethailand.fun/fekebinotakogozusofidasmq2gj.pdfIn PDF document text
    • http://mscredit.info/european_basketball_tournament_2019yca8h.pdfIn PDF document text
    • http://yoga-fitness.space/32523558627es4w1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475382/normal_5fe52bdbe7300.pdfIn PDF document text
    • https://suzoniku.weebly.com/uploads/1/3/4/4/134456843/7635a4666a9.pdfIn PDF document text
    • http://furniture21.online/weather_radar_near_me_tampaewgg4.pdfIn PDF document text
    • http://koolmaxt.online/96490596749jytn4.pdfIn PDF document text
    • http://peludofnor.fun/cute_anime_girl_with_white_hairp11xl.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://texaliborobiko.epizy.com/21005345117.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_off0000cb60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB60 5264 bytes
SHA-256: 9863b2f6ccd574e725e1c4db86fbde0e23cf2963e72cdd6937b73f6a71a9dcde
font_01_sfnt_off0000dd5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD5A 13660 bytes
SHA-256: e3e8c6c0f35b933552bc65ceb8325b22c7979c0d2e59146ff01482571b70af52

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