Malicious PDF — malware analysis report

Static analysis result for SHA-256 f47eeb747cce7e80…

MALICIOUS

PDF

70.5 KB Created: 2020-11-14 19:42:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c7a5ade84003d5a45ecbad8a3d2a28bc SHA-1: 196210fc1b6a877258710e46e730229a11aaf520 SHA-256: f47eeb747cce7e805ce006d8f8e996bdea810e0158c152101b128ad4dd819a7a
214 Risk Score

Malware Insights

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

The PDF contains numerous links, including one identified as a malicious redirector, disguised with text related to 'League of Legends champion rune guide'. This suggests a phishing or malware distribution attempt. The presence of a large number of external PDF links also indicates a link farm, likely for SEO manipulation or to host further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 5

  • 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 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://cctraff.ru/strik?utm_term=league+of+legends+champion+rune+guide
    • https://cdn-cms.f-static.net/uploads/4369182/normal_5f87a0fc69f36.pdf
    • https://batatifenosi.weebly.com/uploads/1/3/4/5/134513642/zisovi.pdf
    • https://fisizupesaxog.weebly.com/uploads/1/3/1/6/131636899/nanajuzejurevibi.pdf
    • https://kunudixi.weebly.com/uploads/1/3/4/6/134667289/2996702.pdf
    • https://mogezisatizate.weebly.com/uploads/1/3/0/7/130775403/nurogagobepakopemaki.pdf
    • https://cdn-cms.f-static.net/uploads/4388169/normal_5fac194d25641.pdf
    • https://walijogopabo.weebly.com/uploads/1/3/0/7/130776167/fubol-tusutexadagaral.pdf
    • https://zosonokabawim.weebly.com/uploads/1/3/4/3/134316026/pawanezuw_zasiwopojome.pdf
    • https://vagonegasix.weebly.com/uploads/1/3/1/4/131482995/xoruma.pdf
    • https://wabumixa.weebly.com/uploads/1/3/4/5/134585451/kuxata.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/zazelujeju/44109657455.pdf
    • https://s3.amazonaws.com/metubevozisul/vukuxirajebezulona.pdf
    • https://s3.amazonaws.com/doxifuba/rerovodinenutopelidel.pdf
    • https://s3.amazonaws.com/xeruxaxer/28695774230.pdf
    • https://s3.amazonaws.com/pusumowi/lwarb_beta_brawl_stars_private_server.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d5d2.bin
ca7d576eb9a6b5be5af8d1db09d9e5b76cf08a64c6123e628ce294f43fe9f452
pdf-font-stream PDF embedded font (sfnt) at offset 0xD5D2 5508 bytes
font_01_sfnt_off0000e86e.bin
90e67aa266758c4968f4e1759079e036f22282a743d37e2f35174e9b44187e26
pdf-font-stream PDF embedded font (sfnt) at offset 0xE86E 10896 bytes