Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd09d162c7c552e0…

MALICIOUS

PDF

78.6 KB Created: 2021-04-07 06:28:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 70f25e2ae1515d6d666dd7db41da29ce SHA-1: 11c828ead7a38cdab89cce3445b6de9ccf7085da SHA-256: bd09d162c7c552e077c9f32995637a2529a9119913f11680cd0f92438c3b78f2
126 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan' and an ML classifier indicating maliciousness. The presence of an external URI pointing to 'ponafet.ru/award' suggests a phishing or redirection attempt. Although no scripts were explicitly extracted, the PDF structure and heuristic firings strongly indicate a malicious intent to lure users to a potentially harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://ponafet.ru/award?keyword=cancer+epidermoide+pdf PDF link annotation
    • https://cdn.sqhk.co/wimiwupo/mSdlQhi/photo_background_changer_background_eraser_editor_apk_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402294/normal_5fefced133c07.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469850/normal_60525870715f4.pdfIn PDF document text
    • https://cdn.sqhk.co/pufowuvikij/iPgciep/makazenekijib.pdfIn PDF document text
    • http://bred-enligne.com/14298711952npug6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476936/normal_5ffbe4d8db5ea.pdfIn PDF document text
    • https://cdn.sqhk.co/kumotuxijufu/0idghhc/8897204737.pdfIn PDF document text
    • https://jipaxebuperiw.weebly.com/uploads/1/3/4/7/134751602/953006adc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495043/normal_5ff2fa3998722.pdfIn PDF document text
    • http://begetus11ppz.xyz/batulz8q2i.pdfIn PDF document text
    • https://xibuzapesajeg.weebly.com/uploads/1/3/4/2/134236274/ridoragad.pdfIn PDF document text
    • http://natbeach.space/xupenutxgev0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419628/normal_5fd1a988dcb7c.pdfIn PDF document text
    • https://cdn.sqhk.co/vefomatakin/hbgiF40/63624881625.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://911f1565-2faa-4874-b261-330d521e7362.filesusr.com/ugd/f46427_ac0c16dfb7294a2185487d9114f0524c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/lepefi/bible_questions_and_answers_john_macarthur.pdfIn PDF document text
    • https://74bb8966-1fc2-43cb-a641-24c20f380d28.filesusr.com/ugd/84c7b5_e466bedba39c4b3cb16e630040a4bdaa.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/robumuduluwise/78976408211.pdfIn PDF document text
    • https://s3.amazonaws.com/xukanomarexumu/wwe_wrestlemania_35_results_bleacher_report.pdfIn PDF document text
    • https://d6ac5066-27fc-4e71-a07d-b30af50dfe8b.filesusr.com/ugd/934fc3_c817d41bbd0f43be9d4e24bc339f02bb.pdf?index=trueIn PDF document text
    • https://a19d597f-2220-41b3-9459-688249e8a20b.filesusr.com/ugd/f19f53_48266769b66c4eaca84c652086ed3480.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tutasujal/65103504220.pdfIn PDF document text
    • https://efec373b-cb85-4617-95c0-ca1809d574ea.filesusr.com/ugd/9529b1_9e2e65fa87ff41d9b8a744e34a79d32f.pdf?index=trueIn 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_off0000f444.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF444 4996 bytes
SHA-256: 7ea95a58cd6aca90343ba06bbc7ba6005dfe9f213dec22f7852eb98ddc756f3e
font_01_sfnt_off00010531.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10531 12732 bytes
SHA-256: f8fdc9e786c2ebae7935fb19a41564724a6a11d07ebb09e05cc0f6b876d392a6

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