Malicious PDF — malware analysis report

Static analysis result for SHA-256 c068290bb72bec1c…

MALICIOUS

PDF

71.9 KB Created: 2021-03-02 15:45:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 78d21fdb0b743ee3478544da5676ac61 SHA-1: 9bb8d1d675ec79eeee7fd19787c35328a62db223 SHA-256: c068290bb72bec1c3c48b0e5661c6c6752dc963a8b317823c68f356ebad8a2f7
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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 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.
  • 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://seumenha.ru/wix?keyword=music+theory+net+answers PDF link annotation
    • https://cdn.sqhk.co/zolilogifuxe/heckpjb/ludalukared.pdfIn PDF document text
    • https://tusidotug.weebly.com/uploads/1/3/4/4/134482214/nimezaxegani.pdfIn PDF document text
    • http://pro-komp-master.website/susixixozukisomemididujetk9683.pdfIn PDF document text
    • https://cdn.sqhk.co/mirusopujame/gmhjgiC/tv_serial_photos_download.pdfIn PDF document text
    • http://kushtanash.ru/72058314774z0eva.pdfIn PDF document text
    • http://luxasireku.sportsontheweb.net/2013_dodge_charger_leather_seat_covers.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419847/normal_6038ce10d6203.pdfIn PDF document text
    • https://cdn.sqhk.co/pigexebobe/gciigji/dameludumesel.pdfIn PDF document text
    • https://dedopaka.weebly.com/uploads/1/3/4/4/134498192/141131.pdfIn PDF document text
    • http://dreabling.online/wofupukupufapiluklkzxq.pdfIn PDF document text
    • https://cdn.sqhk.co/nonuripot/icrhfih/sugar_skull_colouring_book.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4463002/normal_5fedae4729d08.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/gurowozenupifi/tobubemagezikaxo.pdfIn PDF document text
    • https://s3.amazonaws.com/ronenitevodo/81603252982.pdfIn PDF document text
    • https://s3.amazonaws.com/falevi/79827926791.pdfIn PDF document text
    • https://s3.amazonaws.com/zunewidimem/alphabet_number_series.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_off0000ddfa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDFA 5052 bytes
SHA-256: cfab5b7f97bf7addb8546688fd054017db2287c3dca379dcc1632a19b74fd4d6
font_01_sfnt_off0000ef47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF47 10468 bytes
SHA-256: 433d68ecfde60dfd80a76cdc5f96560fe3ef72242f5da1eb25bfc000257c2ecb