Malicious PDF — malware analysis report

Static analysis result for SHA-256 99ff0674289e6dbe…

MALICIOUS

PDF

78.6 KB Created: 2021-01-14 00:03:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 62d9efd6e30bb12cf895a03e8d594962 SHA-1: 096a164fbbb1909d3521f6589cdb018de76ec28b SHA-256: 99ff0674289e6dbe384f6e7bca061985248aa99e361c8288f330a8e73fda2429
214 Risk Score

Malware Insights

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

This PDF file was identified as malicious by multiple heuristics, including a critical finding that it links to known malicious redirector infrastructure. The file contains a large number of external PDF links, suggesting a link farm designed to distribute malicious content or phish users. While no scripts were explicitly extracted, the nature of the embedded links and the ML classification strongly indicate a malicious intent to redirect users to harmful sites.

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
  • 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.
  • 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://ggtraff.ru/aws?utm_term=ardaas+karan+2 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4369779/normal_5fd60b6f30ad4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386076/normal_5feb5959ab33d.pdfIn PDF document text
    • https://waboralitenir.weebly.com/uploads/1/3/4/5/134504299/61cf0f2391.pdfIn PDF document text
    • https://jepexilopenokaf.weebly.com/uploads/1/3/2/6/132680937/43e81d07.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374696/normal_5ffed22d4f48b.pdfIn PDF document text
    • https://nidikibadut.weebly.com/uploads/1/3/1/4/131453007/eca2757e8309.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452835/normal_5fff6e3af2a33.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408195/normal_5ff614122f629.pdfIn PDF document text
    • https://kijadixuzot.weebly.com/uploads/1/3/4/5/134585523/0870fae9fd.pdfIn PDF document text
    • https://sabitafev.weebly.com/uploads/1/3/4/3/134308069/denokini_borizosofamot_waremefizedu_lenixabetu.pdfIn PDF document text
    • https://cdn.sqhk.co/dodiniwotud/ageLiju/final_fantasy_crystal_chronicles_remastered_multiplayer_patch.pdfIn PDF document text
    • https://gezeteweni.weebly.com/uploads/1/3/4/0/134040803/zotum.pdfIn PDF document text
    • https://kovibokasekur.weebly.com/uploads/1/3/4/8/134880184/migobo.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/zarevizebi/beat_saber_new_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/baritexovopa/management_of_occupational_health_and_safety_7th_edition_download.pdfIn PDF document text
    • https://s3.amazonaws.com/lonozote/68706984252.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e151.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE151 4972 bytes
SHA-256: f38c49f550a468300ebb9c3f2a06932d2db0df0d684574fb1d02087997e9ffc8
font_01_sfnt_off0000f247.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF247 11180 bytes
SHA-256: ff64ef518ff9995e8a4418b4f2232f197aa2551ccf93b45ca7960e0d4ca233f7
font_02_sfnt_off00011883.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11883 16164 bytes
SHA-256: ead7fd593d7f5feef6f283420e9b55f8fa4552f107c64b0063d474dd3355abd8

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