Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbc596cfbbfaa7eb…

MALICIOUS

PDF

85.7 KB Created: 2021-01-03 10:16:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 0d4a4c5d6b344088b5fee4785325bee5 SHA-1: bfc18f5ba2d7d6837f15d4fd877d59538e43aff2 SHA-256: fbc596cfbbfaa7ebc3d2c9e7dad638873c85e013f2802cf623f307482bdd5a46
156 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which are hosted on Weebly and appear to be part of a link farm designed to trick users into downloading content. The heuristic PDF_SEO_LINK_FARM indicates a mass of external PDF links, and the ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution. The embedded URL points to a Dream League Soccer mod apk, a common lure for distributing malware.

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://trafficel.ru/123?utm_term=dream+league+soccer+2018+mod+apk PDF link annotation
    • https://ligekikisi.weebly.com/uploads/1/3/4/4/134492932/xozorosurosati_sufununab_zolaxazum_ximufukifetodex.pdfIn PDF document text
    • https://wafulezejo.weebly.com/uploads/1/3/4/7/134748518/kurujeb.pdfIn PDF document text
    • https://ragivigelogupow.weebly.com/uploads/1/3/4/5/134525503/sekilupuzebiforori.pdfIn PDF document text
    • https://rawiranuxox.weebly.com/uploads/1/3/4/6/134618620/rurabob-nuxipoburejiv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383798/normal_5fb2cc5d4db1c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448343/normal_5fceefbc38070.pdfIn PDF document text
    • https://deketonozalupu.weebly.com/uploads/1/3/3/9/133997688/bexod.pdfIn PDF document text
    • https://cdn.sqhk.co/wepenujofow/jbicngj/40984539975.pdfIn PDF document text
    • https://cdn.sqhk.co/sezunofubuzi/2KghbKQ/jusixitonopamegivapojewag.pdfIn PDF document text
    • https://xawewidijaxiju.weebly.com/uploads/1/3/4/2/134266046/833154875d.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/vukumesoj/current_affairs_2018_in_english_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/mokixetat/2491396137.pdfIn PDF document text
    • https://s3.amazonaws.com/baxadelefofibuz/adventure_capitalist_ps4_trophy_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/bokexizometun/2005_yamaha_roadstar_service_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/zufojadibi/bikojodoxajomojodi.pdfIn PDF document text
    • https://s3.amazonaws.com/lixasifasi/app_crashes_after_splash_screen_android.pdfIn PDF document text
    • https://s3.amazonaws.com/jupudizadid/12_apostolic_church_songs.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_off00010e9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E9C 5976 bytes
SHA-256: 64a816ad94c6f24afe5bed9089dffa2275baac13dac888de4b0873dfdf173307
font_01_sfnt_off000122eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x122EB 11532 bytes
SHA-256: 5b5aa67906de67c8a88bb1e3e336064340dfd5a353a909f81755d7b2ededf209

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