Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7056fb58008c0c3…

MALICIOUS

PDF

75.9 KB Created: 2021-05-29 13:24:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 53a222a36a237b5ebb98a85f8bc79832 SHA-1: 800bfd02874d61357bd9dd62283482933a8aa73e SHA-256: e7056fb58008c0c34ed2e2d1efd1bba03883f28b7502fe968b781934639bbe12
156 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to PDF files hosted on Weebly, suggesting a link farm for SEO manipulation or malware distribution. One prominent URL, 'https://maypoin.ru/strik?utm_term=moto+traffic+race+hack+mod+apk', indicates a lure related to a hacked mobile game. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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
  • 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/strik?utm_term=moto+traffic+race+hack+mod+apk
    • https://fuborevotoxuto.weebly.com/uploads/1/3/4/0/134017795/0b1eb21c97.pdf
    • https://ranekiwoj.weebly.com/uploads/1/3/0/8/130814960/semelufazet.pdf
    • https://ragixadimeruwu.weebly.com/uploads/1/3/4/8/134897014/fobufaditirur-fajibuxa-powopijanoge-repesibexaf.pdf
    • https://cdn-cms.f-static.net/uploads/4382187/normal_60500afcaffa8.pdf
    • https://ranekiwoj.weebly.com/uploads/1/3/0/8/130814960/donitipa-diserapug-zilumiwepalu-sewafazoboxulal.pdf
    • https://cdn-cms.f-static.net/uploads/4417830/normal_603bd6de2c23a.pdf
    • https://xawoveramexu.weebly.com/uploads/1/3/4/0/134095940/xilewuxafimefab-pabukuverofof.pdf
    • https://nudegono.weebly.com/uploads/1/3/4/6/134682657/rinaxi-jelavorusif-rexoborux.pdf
    • https://gewaxuselez.weebly.com/uploads/1/3/4/2/134265722/fiborinurupu.pdf
    • https://wuwotozon.weebly.com/uploads/1/3/4/3/134315251/4693280.pdf
    • https://tadinitalu.weebly.com/uploads/1/3/4/7/134744808/rimisomatupinegoz.pdf
    • https://kitopelok.weebly.com/uploads/1/3/4/3/134355781/7125348.pdf
    • https://bomirilipaxotez.weebly.com/uploads/1/3/4/0/134096722/16e8b5a85d99bcd.pdf
    • https://varavedonenen.weebly.com/uploads/1/3/4/3/134316352/vizipitipa_wikeru_sifavuni_sovonaxuwop.pdf
    • https://batidokupofow.weebly.com/uploads/1/3/3/9/133999778/dadepapakobine.pdf
    • https://static.s123-cdn-static.com/uploads/4367279/normal_60085fed66297.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/d3b94b59-89ec-4fe4-905a-dafc639cd9b3/risiximezotaketefibokiwim.pdf
    • https://uploads.strikinglycdn.com/files/4270b6c5-bc62-4cd8-9620-61f588468b92/zesixanidutawaluzi.pdf
    • https://uploads.strikinglycdn.com/files/07a37551-3a89-4f0d-8cc4-84049bd6e858/2020_dodge_challenger_r_t_scat_pack_manual_coupe.pdf
    • https://uploads.strikinglycdn.com/files/1b55c368-ad4d-4641-91d7-185ea92fff1c/what_games_work_with_ipega_controller.pdf
    • https://uploads.strikinglycdn.com/files/db60f1ed-735a-416f-ae5d-ec870974f029/10995359786.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_off0000ec26.bin
1342eac039cd7c41f8b7d0ee31432d9eafb0d1000d35822b339ff18788cd892b
pdf-font-stream PDF embedded font (sfnt) at offset 0xEC26 5252 bytes
font_01_sfnt_off0000fdea.bin
bdaa556bcbb69fe1c608859adedcfe45cf51a85f429fa485514048203a86e658
pdf-font-stream PDF embedded font (sfnt) at offset 0xFDEA 10660 bytes