Malicious PDF — malware analysis report

Static analysis result for SHA-256 52be2d4a16988576…

MALICIOUS

PDF

71.9 KB Created: 2021-03-06 22:49:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 590a24b98c26b5ef4f8086bbfa99fa85 SHA-1: a04faabcc673bdfdd3a1ab4362a1a809202675d4 SHA-256: 52be2d4a169885763a18163e602eec8ba41704df678cb9c1de1adc2a73d8dbfe
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to suspicious domains, indicative of a link farm or phishing campaign. ClamAV and ML classifiers also flagged this file as malicious. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to malicious content, potentially for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://nipisod.ru/123?utm_term=sig+sauer+p226+holster+with+light+safariland PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4381738/normal_60192be089b1a.pdfIn PDF document text
    • https://weritesi.weebly.com/uploads/1/3/5/3/135314652/pilimadebas.pdfIn PDF document text
    • https://wikefazopikevi.weebly.com/uploads/1/3/4/7/134715570/radepuzofudamimuw.pdfIn PDF document text
    • http://nutusugeralinet.mypressonline.com/annovi_reverberi_pump_parts_canada.pdfIn PDF document text
    • http://fesurowejo.mywebcommunity.org/1294200421.pdfIn PDF document text
    • https://nogiwesetegi.weebly.com/uploads/1/3/1/6/131637024/be03e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424040/normal_603cfcff51168.pdfIn PDF document text
    • https://tujozidu.weebly.com/uploads/1/3/4/6/134694944/voraxejo.pdfIn PDF document text
    • http://brumbum6.xyz/32953475479xqm9x.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366343/normal_603665ed06707.pdfIn PDF document text
    • http://metoxegid.mygamesonline.org/35326761684.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447663/normal_603bf65acccee.pdfIn PDF document text
    • http://shmelev.pro/magic_eraser_sheets_walmartip33c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418567/normal_6041181138345.pdfIn PDF document text
    • http://bebetadiruj.mywebcommunity.org/how_many_cubic_feet_is_my_kenmore_elite_refrigerator_model_795.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/liwara/70092075270.pdfIn PDF document text
    • https://s3.amazonaws.com/viromibukoleliw/wajusokefadek.pdfIn PDF document text
    • https://s3.amazonaws.com/mejawiwomak/psychology_textbook_class_11_ncert.pdfIn PDF document text
    • http://zagofij.onlinewebshop.net/fototugutewix.pdfIn PDF document text
    • https://s3.amazonaws.com/xugigabitulu/e_report_card_online.pdfIn PDF document text
    • https://s3.amazonaws.com/vapite/kikofot.pdfIn PDF document text
    • https://s3.amazonaws.com/salosibejodod/thule_bike_rack_fitting_instructions.pdfIn PDF document text
    • https://s3.amazonaws.com/wexoteluwag/love_island_season_2_mean_tweets_answers.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_off0000da41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA41 5784 bytes
SHA-256: a82b2bff61a3bc5d8fd1a1e292866adf654256baddaf74706b013a6e8e3177ea
font_01_sfnt_off0000ee03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE03 10568 bytes
SHA-256: e51977f4b2aef346cdeb30c84ec7f504b5d17b0ea58f756e4b9a051286f9eae7

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