Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb2744c5e7ee2c77…

MALICIOUS

PDF

71.4 KB Created: 2021-04-20 20:59:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 877898bd84da365620a76b034e24ce63 SHA-1: 7351e33679e20858c32996178b30f645245b6b1f SHA-256: eb2744c5e7ee2c773a40edbce2b73d2c94b7563c1f2994807fc1f72f2f38d897
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many of which point to potentially malicious domains, suggesting a link farm or phishing campaign. The ClamAV detection and ML classifier strongly indicate malicious intent. The document body, though heavily obfuscated, appears to be a lure related to 'Fitbit charge 2 alta hr charger' to entice users to click on the embedded links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://kuzutuzo.ru/strik?utm_term=fitbit+charge+2+alta+hr+charger
    • https://cdn.sqhk.co/nakunadubux/jjl2igf/botoberemefaxuruzob.pdf
    • https://cdn.sqhk.co/leperanurosi/ajjidgg/melafoxagakexasaxusevo.pdf
    • https://nupinegudoxaxu.weebly.com/uploads/1/3/5/3/135350485/4807505.pdf
    • http://busurman.space/12511026230og6ly.pdf
    • https://cdn.sqhk.co/zuvutose/gvgj5je/piano_songs_notes.pdf
    • https://cdn.sqhk.co/dipasupor/gejfT3G/colour_thermal_label_printer.pdf
    • https://static.s123-cdn-static.com/uploads/4418170/normal_5fdde38fc8600.pdf
    • https://cdn.sqhk.co/gujowaxexag/V4hejdg/57770424899.pdf
    • http://zesamoa.online/garmin_gpsmap_62s_loading_maps_freewfji3.pdf
    • https://cdn-cms.f-static.net/uploads/4417208/normal_606356aa80770.pdf
    • http://olymptrade.buzz/13723029047zgipr.pdf
    • http://mebelintera.ru/ronazoxoz6rn1p.pdf
    • https://dalenorilesa.weebly.com/uploads/1/3/4/8/134858788/c9477789f95b.pdf
    • http://bestrongbyg.com/2006_ford_focus_owners_manual_freee3l21.pdf
    • http://maewallace.com/sixipoobycj.pdf
    • http://luvetikemo.66ghz.com/marsh_captive_solutions_benchmarking_report.pdf
    • http://titanof-filtr.ru/271897942359q01q.pdf
    • https://funitaba.weebly.com/uploads/1/3/1/3/131380773/e147f7fee01.pdf
    • https://cdn-cms.f-static.net/uploads/4481527/normal_6041ad00221f7.pdf
    • http://clyb-wylcan3.space/59553174168tj3l9.pdf
    • https://cdn-cms.f-static.net/uploads/4383702/normal_604351c59d45f.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://rikirusekufipu.epizy.com/pool_table_size_guide.pdf
    • http://rixibebesimi.epizy.com/punepekuzafidifokod.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_off0000d9d3.bin
de0ced001cba2424da3b325d8d6858767779d4c4985c3bd8a73a1a2209bd4220		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD9D3 5112 bytes
font_01_sfnt_off0000eb36.bin
b51f1a7d4295dee4940aa41896303ecbf788edcdf9e98c68f7c490d0414952ca		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEB36 10948 bytes

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