Malicious PDF — malware analysis report

Static analysis result for SHA-256 9029dade5d62c050…

MALICIOUS

PDF

76.3 KB Created: 2021-03-01 01:02:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 445a83609026a21362954dce88943aaf SHA-1: 6a6f6c807860bddbc808f1ec35d157d7022edd34 SHA-256: 9029dade5d62c050730e25230f3a4be9ea902be00d0e4b99d02c2ee9d2901792
156 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

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
  • 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://dugedepap.ru/strik?utm_term=manufacturing+production+manager+resume+sample PDF link annotation
    • http://xulubapatoso.scienceontheweb.net/what_constitutes_a_breach_of_trust_and_confidence.pdfIn PDF document text
    • http://seropuxaxogel.22web.org/the_darkest_minds_movie_recap.pdfIn PDF document text
    • https://dijatetobof.weebly.com/uploads/1/3/4/3/134322453/winiragok.pdfIn PDF document text
    • http://gajikabe.iblogger.org/rokadalukak.pdfIn PDF document text
    • http://jewagep.22web.org/the_things_they_carried_chapter_16_what_is_the_effect_of_notes.pdfIn PDF document text
    • http://kixiwogazu.sportsontheweb.net/the_secret_book_free_download_in_bengali.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/mubemutolewe/prophet_sport_mini_lipo_charger_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/naxozelozude/pubomu.pdfIn PDF document text
    • http://lesadesar.rf.gd/zamemu.pdfIn PDF document text
    • http://vonanovab.epizy.com/whirlwind_girl_ep_1_eng_sub.pdfIn PDF document text
    • https://s3.amazonaws.com/pulujolatepuv/dikekap.pdfIn PDF document text
    • http://lagefow.epizy.com/how_much_does_it_cost_to_fix_a_watch_battery.pdfIn PDF document text
    • https://s3.amazonaws.com/fapaga/49352623684.pdfIn PDF document text
    • http://rejusozutugagur.epizy.com/wasabovodeduxutixaju.pdfIn PDF document text
    • https://s3.amazonaws.com/kosamupim/facebook_video_er_mozilla_firefox.pdfIn PDF document text
    • https://s3.amazonaws.com/sulasatevirexo/71279997887.pdfIn PDF document text
    • https://s3.amazonaws.com/lanaladu/dance_bar_2019_full_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/pasutiz/xifutazidativor.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_off0000ea70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA70 5480 bytes
SHA-256: 24ccca0befb78e8124dca30881901aef414f35c1ed00067417b2e394b64eb569
font_01_sfnt_off0000fd0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD0F 11240 bytes
SHA-256: 7147ac88afb2593202858a045aedca5b636fca5a8690be201a10fc7f5b7ec954

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