Malicious PDF — malware analysis report

Static analysis result for SHA-256 bee1e03fbf9e3810…

MALICIOUS

PDF

74.5 KB Created: 2021-02-21 00:23:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 0d2d622f13a5c55f5ca9cc2055587213 SHA-1: 29c52f5be183c141fac35a05932243bc42e419d8 SHA-256: bee1e03fbf9e38103c1898de17602e7853b4764bf7e3ec61f29a976cb5a697d9
126 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, many of which point to disposable domains and are flagged as part of a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, specifically phishing. The document body, though heavily obfuscated, contains keywords that likely serve as a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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
  • 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://maypoin.ru/123?utm_term=intellicharger+i2+blinking PDF link annotation
    • http://marafonsport.site/imagenes_de_caligrafia_para_nios63htc.pdfIn PDF document text
    • http://afracheat6.xyz/zokewewozew8gba0.pdfIn PDF document text
    • http://boomerangoo.site/panemefok6zw.pdfIn PDF document text
    • http://daddytestit.xyz/53872496436usfwt.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403959/normal_6015305fcc9c2.pdfIn PDF document text
    • https://cdn.sqhk.co/nogawevorus/igRf1gc/hashtags_on_facebook_post.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365608/normal_601cbd00624c6.pdfIn PDF document text
    • https://cdn.sqhk.co/javeduner/iehdTjd/zisosisilewewaledemusa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489404/normal_5fd2fb5b8c291.pdfIn PDF document text
    • https://cdn.sqhk.co/mikevoponage/fhdgfjc/dude_perfect_tour_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/xixujipum/ghbihN1/57431362193.pdfIn PDF document text
    • http://sendgrid-de.com/84192107711bfzxd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481417/normal_6020ff137e709.pdfIn PDF document text
    • https://cdn.sqhk.co/pabefidinaz/atZxPjh/talking_tom_cat_game_download.pdfIn PDF document text
    • http://tamakar.xyz/tutipomuromurjnd9.pdfIn PDF document text
    • http://form-lnstagramverificationbadge.com/smartsheet_pricing_integration7mvx0.pdfIn PDF document text
    • https://cdn.sqhk.co/kogeledewafo/B4jffOv/71496351012.pdfIn PDF document text
    • https://cdn.sqhk.co/gixedomawa/jjXpia7/celebrity_quiz_look_alike.pdfIn PDF document text
    • http://fiwusenipabaj.iblogger.org/macbeth_2015_full_movie_in_hindi_download.pdfIn PDF document text
    • http://microbladingeyebrowsdallastx.com/23098479328xm2ly.pdfIn PDF document text
    • https://cdn.sqhk.co/nigalasiline/dibigBv/4633775836.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mepigaruvuj.rf.gd/character_and_antecedent_certificate_form_1.pdfIn PDF document text
    • http://muwovulal.epizy.com/rufaduvexixulixagezagir.pdfIn PDF document text
    • http://bepenopivite.epizy.com/jabadakijanowanifugujir.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_off0000e313.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE313 5156 bytes
SHA-256: cfada3a892dd66572abd5cade4d205454bb172c4a223e7db27ada58d74e93a10
font_01_sfnt_off0000f498.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF498 11500 bytes
SHA-256: 5de790657a436c7946005a939db42646222f09a7be29fd8aec8782e2ba100a84

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