Malicious PDF — malware analysis report

Static analysis result for SHA-256 93224eb760e07339…

MALICIOUS

PDF

79.1 KB Created: 2021-03-16 10:20:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: 8e4e915d68a56da9f07324a1102add9d SHA-1: bd60dadf6f1c8eb606f49511155b18373e02cfd8 SHA-256: 93224eb760e0733965cdc166de0ba7f3763c7d8027562056fa2b6df08b4beafe
126 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous embedded URLs, with one prominent URL pointing to a domain associated with election results, suggesting a lure to entice users. The PDF also exhibits characteristics of a link farm on disposable hosting, further supporting a malicious intent to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://gimoguvi.ru/award?keyword=maharashtra+election+result+2020+winner+list+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4405899/normal_5ff8dbceb90b2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382421/normal_5fee3d053177a.pdfIn PDF document text
    • http://swiss-gear.shop/how_to_reply_to_a_5_star_reviewfb126.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383689/normal_5fcd7ee41611a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4529024/normal_6011ef4b8a149.pdfIn PDF document text
    • http://mon-compte-cmb.best/exam_date_sheet_2019_cbselq49j.pdfIn PDF document text
    • http://keepxufi.space/93139815031e2i6j.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387562/normal_60469cc9bd854.pdfIn PDF document text
    • http://samyog.ru/robbery_bob_game_hack_version3do21.pdfIn PDF document text
    • http://sis-paypal.com/barcode_generator_software_free_with_crackti8og.pdfIn PDF document text
    • http://weareanonymous.org/gasefox8dc5n.pdfIn PDF document text
    • http://nesobaka3.xyz/14714762128xk99q.pdfIn PDF document text
    • http://stakingyfi.com/wasunokarefeq3h0s.pdfIn PDF document text
    • http://7lessons.site/firehouse_subs_engineer_large_caloriesi5pcg.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/38da0f98-5adc-4693-b8a7-372ad444d05e/35241468613.pdfIn PDF document text
    • https://s3.amazonaws.com/vapelurowar/43584580465.pdfIn PDF document text
    • https://s3.amazonaws.com/fumiposamisur/girubukixozesebosiralo.pdfIn PDF document text
    • https://s3.amazonaws.com/farowug/gaxawufaderiposovobom.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1aca81c6-4419-4cd6-a435-4e36e570fefd/xisub.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7982aa2-336b-47c5-99b9-f4e190d9f434/sifikuvigoligazuvobava.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7dbe46e5-c1cd-4d52-83de-96412c4cd29e/84688062082.pdfIn PDF document text
    • https://s3.amazonaws.com/mibiwivanetuj/club_c_cardi_reebok_shoes.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_off0000f4fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4FA 5616 bytes
SHA-256: 6884d76a3cd6c2d4beda2c995bdeea472d8c02edbf93aafbe9f0cfbba0c5b6e2
font_01_sfnt_off00010831.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10831 11236 bytes
SHA-256: f9d7eab005254f79210504726d512c5577ad0c389a7434cea046e45a260d500f