Malicious PDF — malware analysis report

Static analysis result for SHA-256 de25713591289077…

MALICIOUS

PDF

83.9 KB Created: 2021-03-02 03:43:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: edd7ba08a1b8278e1d105b0ae04be3b1 SHA-1: bd19dac723629f5c8368adfa596e509fcaff1c11 SHA-256: de257135912890779bb0826ad24db0c0841d50b9328987e7b5924b451e3923a1
126 Risk Score

Malware Insights

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

The PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many pointing to disposable hosting or link farms, suggesting an attempt to redirect users to malicious sites. The presence of a URL with a 'utm_term' parameter indicates a potential phishing lure related to search queries.

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://zajinet.ru/123?utm_term=what+is+the+spiritual+meaning+of+the+tree+of+life PDF link annotation
    • http://wasukowoko.iblogger.org/ipad_mini_4_cover_apple_store.pdfIn PDF document text
    • https://xedatuvigino.weebly.com/uploads/1/3/4/5/134580066/buxita.pdfIn PDF document text
    • https://beluxavin.weebly.com/uploads/1/3/4/5/134507718/rizomobu.pdfIn PDF document text
    • http://vevaroda.scienceontheweb.net/bosch_vision_300_series_dryer_troubleshooting.pdfIn PDF document text
    • https://cdn.sqhk.co/devisofage/0jijcEK/10401217856.pdfIn PDF document text
    • https://mevinabepoke.weebly.com/uploads/1/3/2/7/132740553/bb3fdcba846ed4.pdfIn PDF document text
    • https://xekukagakodepa.weebly.com/uploads/1/3/3/9/133999272/7936033.pdfIn PDF document text
    • https://cdn.sqhk.co/letonolomo/jdihjei/uber_driver_app_download_iphone.pdfIn PDF document text
    • https://zoxaminajoge.weebly.com/uploads/1/3/1/6/131637873/0b8f3bdc1bb3707.pdfIn PDF document text
    • https://cdn.sqhk.co/semiwewedazi/hdJgg0U/rokoxuf.pdfIn PDF document text
    • http://foxinawolukomat.iblogger.org/carrom_3d_game_for_pc_free.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bojoxubifazavij.rf.gd/87467972798.pdfIn PDF document text
    • https://s3.amazonaws.com/farezelof/wiwoxiradikoxiso.pdfIn PDF document text
    • http://wupobivawenako.epizy.com/nightmare_sans_battle.pdfIn PDF document text
    • https://s3.amazonaws.com/widiku/dns_benchmark_tool.pdfIn PDF document text
    • http://ruxogofirovudux.epizy.com/sujerenaxobukegoluvoburu.pdfIn PDF document text
    • http://womawujun.atwebpages.com/vorasekidutomatibox.pdfIn PDF document text
    • https://s3.amazonaws.com/wopari/gezevakam.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_off0000f73e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF73E 5328 bytes
SHA-256: b1579a4859eaaa60907545b03ec48ba2ae1a58fefbc5fe8dfa5e9e1350e809f0
font_01_sfnt_off00010943.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10943 10564 bytes
SHA-256: 887dd763146ae357596661a474fd7118a14439b629108792941a9a5feba4b7ad
font_02_sfnt_off00012d1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D1D 16028 bytes
SHA-256: 13adf508137d8c465935a7a142060f5d940462760dc3fd3f5061e956d2f2222b

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