Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f7cfab8114de7c5…

MALICIOUS

PDF

77.3 KB Created: 2021-02-14 03:07:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 0b0bce2ee9d640c264aa2f01338b39cc SHA-1: 5d6942fb4b357c2bb4a22793e552753f560dba72 SHA-256: 0f7cfab8114de7c5a41ba492f5e19419ec1a15dd128f3d985ffd0e4ae1dbb4e0
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, a common tactic for SEO spam and phishing campaigns. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external links, with one pointing to 'https://leonvi.ru/wix?keyword=troy+bilt+2200+pressure+washer+parts+diagram'. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports a malicious classification. No scripts were extracted, but the document structure and URL patterns are indicative of a malicious PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 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://leonvi.ru/wix?keyword=troy+bilt+2200+pressure+washer+parts+diagram PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4465396/normal_6015b60c60ae2.pdfIn PDF document text
    • https://vixoketos.weebly.com/uploads/1/3/1/4/131453026/430881.pdfIn PDF document text
    • https://vixezikuf.weebly.com/uploads/1/3/1/3/131383943/wagejew-kegawakob.pdfIn PDF document text
    • https://megefutuw.weebly.com/uploads/1/3/0/9/130969536/tiburofotu.pdfIn PDF document text
    • https://duzufeto.weebly.com/uploads/1/3/4/7/134734580/2cc0c112eb9f.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/mefonevimimix/3759490860.pdfIn PDF document text
    • https://s3.amazonaws.com/pokorevalaxex/latest_odia_film_song_video.pdfIn PDF document text
    • https://s3.amazonaws.com/vipinib/uc_browser_software_for_windows.pdfIn PDF document text
    • http://tusibav.epizy.com/sidib.pdfIn PDF document text
    • https://s3.amazonaws.com/suxugipipolazog/nigudawapabum.pdfIn PDF document text
    • https://s3.amazonaws.com/xuzed/angular_form_example.pdfIn PDF document text
    • https://s3.amazonaws.com/begijufadi/crystal_report_using_dataset_in_c._net.pdfIn PDF document text
    • https://s3.amazonaws.com/mejados/lilewikodiwujusokep.pdfIn PDF document text
    • https://s3.amazonaws.com/golepe/wigeguxaxemov.pdfIn PDF document text
    • https://s3.amazonaws.com/fotepopunaj/bluetooth_software_for_pc_softonic.pdfIn PDF document text
    • https://s3.amazonaws.com/legobegutulo/c_y_l_ka_full_form.pdfIn PDF document text
    • https://s3.amazonaws.com/salade/zijazariwatelorazo.pdfIn PDF document text
    • http://wetizizokixo.epizy.com/6148426737.pdfIn PDF document text
    • http://fejusadifidexi.epizy.com/11581546621.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_off0000eff5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFF5 5932 bytes
SHA-256: 2c0c97570d30c199c8e3f77ec6e25e1be5374314a48391fbcdc1cce5ebe66081
font_01_sfnt_off0001040d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1040D 10316 bytes
SHA-256: fc363cef40d0883dcc4f40f88f88fba5b27eafc959e3f91330db051676f32c97

Open this report in the interactive analyzer, or submit your own file for analysis.