Malicious PDF — malware analysis report

Static analysis result for SHA-256 08902ed716b2d062…

MALICIOUS

PDF

74.7 KB Created: 2021-02-21 21:23:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: eea5a05be3c9ae6813c18b694506bc21 SHA-1: 4a0d4271935c10952067d1f45a31a6271689cdc9 SHA-256: 08902ed716b2d0620efb3c6eb8fcb349c02ea3cb289e0e609357724c3a65193a
126 Risk Score

Malware Insights

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

The PDF contains numerous external links, many pointing to disposable domains, suggesting a link farm or phishing operation. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a phishing or malware distribution attempt, likely leveraging social engineering to trick users into visiting 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://druttle.ru/wix?keyword=isotope+notation+and+average+atomic+mass+worksheet+answers PDF link annotation
    • http://trokot-tonirovka.online/samefifegigolugutarabesapfcuaa.pdfIn PDF document text
    • https://cdn.sqhk.co/lekusovu/ogcieid/24151287116.pdfIn PDF document text
    • http://kekebum.22web.org/tanawaxadareforawik.pdfIn PDF document text
    • https://cdn.sqhk.co/pefisemise/ijbwlWP/64701949736.pdfIn PDF document text
    • http://simcars.ru/200546122027bqkn.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4472488/normal_6002a6658e19d.pdfIn PDF document text
    • http://goodnaturak.space/super_contraption_3d8y9uj.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nalakakowim.epizy.com/what_is_the_period_between_the_old_and_new_testament_called.pdfIn PDF document text
    • http://xojixitutatafu.epizy.com/aha_heart_failure_guidelines_2013_executive_summary.pdfIn PDF document text
    • https://s3.amazonaws.com/fadedosi/sheet_street_store_near_me.pdfIn PDF document text
    • https://s3.amazonaws.com/fedufiporara/what_rating_is_starship_troopers.pdfIn PDF document text
    • http://rikonobawo.epizy.com/activex_plugin_mac.pdfIn PDF document text
    • https://s3.amazonaws.com/bidemewufa/tangled_2_trailer.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_off0000e59b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE59B 5608 bytes
SHA-256: 0c3c5fc88d1e7fdd0a83d325b488c1cfe370f511fceb3151fedea88485b8047a
font_01_sfnt_off0000f89f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF89F 10996 bytes
SHA-256: f6429bf32231ade02bfb413e57bf918917241001e69177cebcc5a025f6020d5c

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