Malicious PDF — malware analysis report

Static analysis result for SHA-256 9bd3ff9af759e66d…

MALICIOUS

PDF

69.8 KB Created: 2020-12-28 08:42:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 9de2f937299f5ea771d87abfbf423af7 SHA-1: d32cf0210ecf1db07eb2fe661c32a81f2d9b1402 SHA-256: 9bd3ff9af759e66de08eb948f592824622bf30c127391186c4cc860c1168fb06
214 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, suggests a lure related to a game guide, likely to trick users into clicking malicious links. The presence of a link farm and a critical ClamAV detection further supports its malicious nature.

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
  • 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://traffine.ru/aws?utm_term=hollow+knight+dlc+1+guide In PDF document text
    • https://rogubadivuna.weebly.com/uploads/1/3/4/3/134337887/b0b47d5fd32423.pdfIn PDF document text
    • https://cdn.sqhk.co/topedimerab/DGico5J/sogatodasupexidoti.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485689/normal_5faa35cfa8614.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484364/normal_5fcba1077afd5.pdfIn PDF document text
    • https://pidakulosa.weebly.com/uploads/1/3/4/3/134391257/nekajet-begeku-vomewapatoxi.pdfIn PDF document text
    • https://cdn.sqhk.co/masunidupag/cifhegc/the_rock_soundboard_app.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456996/normal_5fbb05aaa514d.pdfIn PDF document text
    • https://cdn.sqhk.co/lizupasepafu/gghfjeM/simcity_buildit_para_pc_hack.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/safago/xasemepibotado.pdfIn PDF document text
    • https://s3.amazonaws.com/mexijegedakol/30223861684.pdfIn PDF document text
    • https://s3.amazonaws.com/dalava/house_of_fun_slots_download_for_windows_10.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8fa0b9d9-e83b-4f28-86ef-d2968071abe3/bigenewadegoburimazotos.pdfIn PDF document text
    • https://s3.amazonaws.com/kovozenamofox/guide_law_firm.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/jusixamef.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_off0000d612.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD612 4888 bytes
SHA-256: bb75c3f85a57865dd18f95fe75080de08de3e698836538e7bec4f27cdacf4005
font_01_sfnt_off0000e6c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6C8 10364 bytes
SHA-256: 5665d544c8079d6e13fbe825ff3d9f1ec709eecbcd231ffa1a7c5fa6506d48b0

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