Malicious PDF — malware analysis report

Static analysis result for SHA-256 6db3b9674ddc8003…

MALICIOUS

PDF

65.6 KB Created: 2020-12-25 13:42:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: c7a0a73ea6d20d3bbceebf68304db6ca SHA-1: 07fd4689454c9cd63e74975478c07b8080d5aae0 SHA-256: 6db3b9674ddc800333a11551284f3ea22dfd9cb9055475f631de4960ccea6770
176 Risk Score

Malware Insights

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

The file is a PDF containing numerous external links, a technique often used for SEO poisoning or to direct users to malicious sites. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external links, with one pointing to a potential APK file. The 'SE_CALLBACK_LURE' heuristic suggests a phishing or tech-support scam context, further supported by the embedded URLs. No scripts were extracted, but the overall structure and heuristics point to a malicious document designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://trafffe.ru/strik?utm_term=national+civil+war+battlefields+in+virginia PDF link annotation
    • https://cdn.sqhk.co/givinonu/8awjcgf/into_mirror_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/gikunixa/gxSm9je/3166255523.pdfIn PDF document text
    • https://cdn.sqhk.co/nebuneduzib/RM8o10f/space_movie_girl.pdfIn PDF document text
    • https://jixisejilikabow.weebly.com/uploads/1/3/4/2/134265892/3276222.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/ronenitevodo/new_bollywood_music_video.pdfIn PDF document text
    • https://s3.amazonaws.com/sasufufa/73986053534.pdfIn PDF document text
    • https://s3.amazonaws.com/sajatesawodiji/google_translate_app_apkpure.pdfIn PDF document text
    • https://s3.amazonaws.com/ladiwuzetawedi/criminal_movie_tamil_dubbed.pdfIn PDF document text
    • https://s3.amazonaws.com/zazelujeju/51471708525.pdfIn PDF document text
    • https://s3.amazonaws.com/bomifabipi/call_of_duty_ww2_walkthrough.pdfIn PDF document text
    • https://s3.amazonaws.com/negonanopix/egg_drop_challenge_worksheet_printables.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/notox.pdfIn PDF document text
    • https://s3.amazonaws.com/solonebosop/minecraft_bedrock_hacked_client_addon.pdfIn PDF document text
    • https://s3.amazonaws.com/joterige/8869880696.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_off0000c59f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC59F 5448 bytes
SHA-256: 7de4f2cf80422ff0768c25b8684714e4227522f782203d7545d38432610cea07
font_01_sfnt_off0000d851.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD851 9700 bytes
SHA-256: 37ac949b9533bdeb4f9adf2cd1e54b0e447f0760c141442bc5eaf2534ae84212

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