Malicious PDF — malware analysis report

Static analysis result for SHA-256 ada1ac8762fe59a0…

MALICIOUS

PDF

89.7 KB Created: 2021-05-13 09:16:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 43b418aa099b3e991dd01db89a657b31 SHA-1: e7f617389c48ab12be4d09310f7b218212f8f53e SHA-256: ada1ac8762fe59a0a90607f89f746f9573394b85d334840506cb8f3aa68ec2a5
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF file was flagged by multiple heuristics, including PDF_SEO_LINK_FARM and ML_NYX_PDF_MALICIOUS, indicating a high likelihood of malicious intent. The embedded URLs, particularly the one pointing to 'lozipotod.ru', suggest an attempt to redirect users to a malicious site. The ClamAV detection further supports the malicious classification, identifying it as Pdf.Phishing.Trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 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://lozipotod.ru/strik?utm_term=how+to+turn+off+keyboard+light+dell+latitude PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369630/normal_5fdbcd2600cfa.pdfIn PDF document text
    • http://ig-mediateam.net/fugalinevusamibutumimdtc0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475212/normal_60658017561f1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4529024/normal_6006d4b6e0bf0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4502511/normal_5ffa0697544e4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403540/normal_5fe1af7062b75.pdfIn PDF document text
    • https://borugurobe.weebly.com/uploads/1/3/4/5/134582704/d8457.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366055/normal_5fd27d694edd6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446030/normal_6024c6b39be57.pdfIn PDF document text
    • https://zudibuliri.weebly.com/uploads/1/3/5/3/135319562/menidanitisegip.pdfIn PDF document text
    • https://wotuvinuvokotar.weebly.com/uploads/1/3/5/3/135330473/1975725.pdfIn PDF document text
    • http://mabay.fun/twitter_search_by_date_sincew0x7z.pdfIn PDF document text
    • http://bupetud.xyz/janatha_garage_songs_lyrics3au7v.pdfIn PDF document text
    • http://astrology-personal.online/sojijadovudokagob6ubn.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/bufexa/galofub.pdfIn PDF document text
    • https://s3.amazonaws.com/remavuj/27264974884.pdfIn PDF document text
    • https://s3.amazonaws.com/jozaponi/english_grammar_tenses_in_urdu_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/risalenefazozo/garmin_nuvi_2595lm_update.pdfIn PDF document text
    • https://s3.amazonaws.com/kuboki/best_taco_bell_items_when_high.pdfIn PDF document text
    • https://s3.amazonaws.com/nodetuxapabara/king_kutter_tiller_for_sale_craigslist.pdfIn PDF document text
    • https://s3.amazonaws.com/liwara/mepeti.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_off00011d68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D68 5348 bytes
SHA-256: e0ebe3a273e9e3ad51bb2690c196095a9fca47c63d306491a65d7940600235ac
font_01_sfnt_off00012fab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12FAB 12152 bytes
SHA-256: 8b189eb296c5efd4fa8f940bc41a529743b9bb9c18dff0278edc73493d2320b4

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