Malicious PDF — malware analysis report

Static analysis result for SHA-256 8899c211e08eecaa…

MALICIOUS

PDF

75.6 KB Created: 2021-02-28 06:14:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 415fe8a6f0a811163367fa96554e3346 SHA-1: 1a18cda97eca0d58f1509f0c40f67d7ecb72df12 SHA-256: 8899c211e08eecaa39a14d5eeebaecccbb24343c61b830b9fd5dafd376998ac8
126 Risk Score

Malware Insights

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

The PDF contains numerous external links, many hosted on disposable domains, suggesting a link farm or phishing attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. The presence of embedded URLs, including one pointing to 'lozipotod.ru', further supports the classification as a phishing or malware distribution lure.

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 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://lozipotod.ru/aws?utm_term=poulan+2150+chainsaw+manual PDF link annotation
    • https://bitusuverutito.weebly.com/uploads/1/3/1/8/131871453/b4bb38d.pdfIn PDF document text
    • http://stavki.link/the_other_side_of_the_door_full_movie_download_in_hindi_khatrimazag0odj.pdfIn PDF document text
    • https://lamamamim.weebly.com/uploads/1/3/1/6/131606140/kuwodaxajorab-mimebukezo-jajobekasafo.pdfIn PDF document text
    • https://masudokunu.weebly.com/uploads/1/3/4/7/134731157/8372257.pdfIn PDF document text
    • http://disconto50.info/how_to_lubricate_acorn_stairliftvguey.pdfIn PDF document text
    • http://izzzaaa.space/aha_bls_instructor_guidelineso4i95.pdfIn PDF document text
    • https://zitipijasidigor.weebly.com/uploads/1/3/0/8/130874434/bifofanirekid_tanigabudak_xiboli_gikanaf.pdfIn PDF document text
    • https://foxufaba.weebly.com/uploads/1/3/1/4/131482874/5669221.pdfIn PDF document text
    • http://stav-games.ru/80057856728ww62k.pdfIn PDF document text
    • http://agencymedia-ig.com/12362892429tpjpp.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://xaxisavubuwowa.epizy.com/nediwaw.pdfIn PDF document text
    • http://dekefolujif.epizy.com/basmati_blues_movie_in_dual_audio.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dcfc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCFC 5172 bytes
SHA-256: 3ea1c53fefccf716bc740b1d413d63d229db4e65741afd6081086241f1a151f1
font_01_sfnt_off0000ee69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE69 11076 bytes
SHA-256: da96aa3d26cfff238b028583e944ceb287409d255e1302ccf0506992d523196f
font_02_sfnt_off00011343.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11343 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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