Malicious PDF — malware analysis report

Static analysis result for SHA-256 f59f55052fa143c9…

MALICIOUS

PDF

75.3 KB Created: 2021-01-30 13:53:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 4166db3c3de64299d4e71d4a7a537b69 SHA-1: 0dc29291e85fd4e86edda5556446ef0240a8497a SHA-256: f59f55052fa143c92de8566fa7a3deca0830a05e6e68ad46505ee034a3b39214
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable domains, and is flagged by ClamAV as a phishing trojan. The ML classifier also strongly indicates maliciousness. The document body, though heavily obfuscated, appears to be a lure for 'Aashayein movie songs free', suggesting a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jottigo.ru/aws?utm_term=aashayein+movie+songs+free PDF link annotation
    • http://verification-help.com/mikewawlu49.pdfIn PDF document text
    • http://freehookup.xyz/xepesekig8bzg.pdfIn PDF document text
    • http://limecash.xyz/vojejevetowuxanacgdmz.pdfIn PDF document text
    • http://cafe-cok.ru/adobe_illustrator_cc_classroom_in_ag3rgd.pdfIn PDF document text
    • https://cdn.sqhk.co/ketalidukepi/jgdWiio/5798637764.pdfIn PDF document text
    • https://domemasajexal.weebly.com/uploads/1/3/5/3/135304114/rumemalavu_guroxumalonu_fukizekadi_kafudatakov.pdfIn PDF document text
    • https://farazekij.weebly.com/uploads/1/3/4/3/134379469/bodifumibub.pdfIn PDF document text
    • http://jobs-ingenieur.best/matematicas_simplificadas_3ra_edicioeo9tf.pdfIn PDF document text
    • https://dafufiwe.weebly.com/uploads/1/3/4/3/134368649/f3dc0a.pdfIn PDF document text
    • http://consumer-data-protection-bureau.com/gubowitomibugajemedena112ut.pdfIn PDF document text
    • http://lnstagramsupportlives.com/45059960746ym32z.pdfIn PDF document text
    • http://testvvd.xyz/117000121784wy3x.pdfIn PDF document text
    • http://immortal-sho.club/stylish_text_generator_for_free_firekff5a.pdfIn PDF document text
    • http://fredo.run/slotted_spoon_function29f75.pdfIn PDF document text
    • http://help-copyrightviolationhelpcenter.com/hollywood_movies_dubbed_in_hindi_a_tdbv4q.pdfIn PDF document text
    • http://justamorem.com/proform_intermix_acoustics_2.0_manuahasna.pdfIn PDF document text
    • http://wekeb.space/24758660513uzsdr.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://melaworogafema.epizy.com/padokolo.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_off0000e861.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE861 5300 bytes
SHA-256: 06adee2e19a37dd832189495649e43c8f2dda5ff75bb0ae18dd21f181cb1d6f1
font_01_sfnt_off0000fa4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA4F 11200 bytes
SHA-256: 4180d08dbd2c53bb0d502d241b33f75e3dc851205ea6757054a02bd1636ea4e6

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