Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0db594077f80040…

MALICIOUS

PDF

75.7 KB Created: 2021-04-14 11:06:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ffdcd436824cb1fa12a2d1855f516dd8 SHA-1: 73c9bfd7732b0f9b44e951ca1a944cb043a9763d SHA-256: f0db594077f80040ca91ce63e1eb4b165d0e0d4c70552fb154f66c11fff28410
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 PDF files hosted on various platforms, indicating a link farm or redirection strategy. The ClamAV detection and ML classifier strongly suggest malicious intent, likely phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and numerous embedded URLs are indicative of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://seumenha.ru/strik?utm_term=i+love+to+draw
    • https://cdn.sqhk.co/vasibejovej/AHyyaij/55078652178.pdf
    • https://demimawuna.weebly.com/uploads/1/3/5/3/135389973/tolazopurimeruzogos.pdf
    • https://static.s123-cdn-static.com/uploads/4426059/normal_5feb8dd8e26bc.pdf
    • https://bulodogezuso.weebly.com/uploads/1/3/4/8/134868115/57a1ed43bb4a.pdf
    • https://fevupadijedip.weebly.com/uploads/1/3/1/4/131407665/d7bf20ac315a.pdf
    • https://static.s123-cdn-static.com/uploads/4445881/normal_5ff5288d4a0b5.pdf
    • https://lavovozanu.weebly.com/uploads/1/3/0/7/130739022/nunumim.pdf
    • https://wotopegajoxife.weebly.com/uploads/1/3/4/0/134042499/zipidi.pdf
    • https://kamujepepafiga.weebly.com/uploads/1/3/0/7/130775209/zelusizomiduruj.pdf
    • https://gerulelib.weebly.com/uploads/1/3/0/9/130969354/buromofovazifanowik.pdf
    • https://cdn.sqhk.co/vuvipulumiki/ujdxiea/news_opener_after_effects_template_free.pdf
    • https://static.s123-cdn-static.com/uploads/4452377/normal_5fe1283496ae2.pdf
    • https://static.s123-cdn-static.com/uploads/4365582/normal_5fdef72c38df1.pdf
    • https://duxakezise.weebly.com/uploads/1/3/4/7/134713437/pajaxafu-lurun.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/5358b0c0-2749-4f73-a75c-182cf42ef3bd/vitexujurobozotava.pdf
    • http://dafadewu.epizy.com/16767421690.pdf
    • http://vugikalijuboxo.epizy.com/62293617140.pdf
    • https://uploads.strikinglycdn.com/files/f9dbfd55-e88f-4021-b8ab-1c7c4f046235/kohler_a112_18.1_kitchen_faucet_manual.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e77d.bin
a42eab4b554d8af9c02c13d1ec900f492047adcf00bc978708dae8a4132f2e17		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE77D 4732 bytes
font_01_sfnt_off0000f7b3.bin
fb94f184069b2abcd5e5b14ca9dd7d4dde5e4264c11aa77d346d790acc94b35d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF7B3 12100 bytes

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