Malicious PDF — malware analysis report

Static analysis result for SHA-256 22deb629dd852325…

MALICIOUS

PDF

70.8 KB Created: 2021-02-18 00:45:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: ea225833131d630cd7d6b68a40fdd572 SHA-1: eef973b045210d1e8897f400b5194353d97902ad SHA-256: 22deb629dd85232528dba67c95d619204b4a266412ad42275eefa3a34fb560fc
126 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, many pointing to disposable hosting or link farms, suggesting a phishing or malware distribution scheme. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' specifically highlights the use of multiple distinct hosts with single links, a common tactic for evading detection and distributing malicious content. No scripts were extracted, but the overall structure and URL patterns strongly suggest an attempt to redirect users to malicious sites.

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 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://baarspo.ru/strik?utm_term=what+were+the+four+estates+of+france PDF link annotation
    • https://gabukoxikala.weebly.com/uploads/1/3/3/9/133997771/732d8c1f3d3384.pdfIn PDF document text
    • https://jowatewiko.weebly.com/uploads/1/3/1/3/131380225/gamibewil_jinowunipepovox_niwolav.pdfIn PDF document text
    • https://kiruxujekan.weebly.com/uploads/1/3/2/7/132740547/dc87d448ed51c1.pdfIn PDF document text
    • http://50offshop.pro/a_whole_new_world_chords6al98.pdfIn PDF document text
    • http://idealicaitalia.website/216885025817f2gd.pdfIn PDF document text
    • http://teksalon.xyz/describe_the_sun_physical_and_chemical_characteristicsy7xki.pdfIn PDF document text
    • http://wugafis.66ghz.com/wegaratet.pdfIn PDF document text
    • http://medtechnika1.ru/jessie_and_austin_and_ally_episodezvc32.pdfIn PDF document text
    • https://metiganad.weebly.com/uploads/1/3/4/6/134659194/faa218.pdfIn PDF document text
    • http://kutakelipaxeb.22web.org/nagepe.pdfIn PDF document text
    • http://evilcheats.fun/beach_buggy_racing_hack_apkfv9ps.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://jisazima.epizy.com/40305487797.pdfIn PDF document text
    • http://wivonubezur.epizy.com/38868049632.pdfIn PDF document text
    • https://s3.amazonaws.com/bivanud/batman_joker_tamil_dubbed_movie_hd.pdfIn PDF document text
    • http://zidojupilazado.rf.gd/prevencion_del_alcoholismo_en_adolescentes.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_off0000c8f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8F2 4876 bytes
SHA-256: 97570971c546df810f65d2ae34e6549a1aefa3d5b7b7a33240dd3d6428683a3b
font_01_sfnt_off0000d999.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD999 11000 bytes
SHA-256: f929c3190bfbd034ecd0ef19933a63484b07480398b6065ea1dde8961e6d7c0f
font_02_sfnt_off0000fe61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE61 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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