Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8502c2fb4d2bcb7…

MALICIOUS

PDF

64.1 KB Created: 2021-02-14 22:59:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: ff5a8049ec86478ced2a28e714b609a4 SHA-1: 80a06b7d216133dc2dba6ad23ead4ea45983d030 SHA-256: b8502c2fb4d2bcb78e53d53ff5d7d91bd6e4bcee5f3f0676a251d6cc0942666c
126 Risk Score

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/wb?keyword=yuma%20weather%20report%20arizona PDF link annotation
    • http://de-bewertung-889562.icu/fejopololubenuzateri75peg.pdfIn PDF document text
    • https://sujumakatu.weebly.com/uploads/1/3/1/3/131379709/3ac4e1fed72a5f.pdfIn PDF document text
    • http://copyright-supporthelp.com/ranirezixaxogazivvfsur.pdfIn PDF document text
    • https://rofoxanubojinud.weebly.com/uploads/1/3/2/7/132740779/kivuguvodekebe-jetazutenoson-zetab-zituxelax.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444104/normal_5fdb8ddb14d4b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376120/normal_601eea389fe4b.pdfIn PDF document text
    • http://xteenware.online/asthma_copd_overlap_syndrome_gina_guidelinesot8m4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426815/normal_5ff70b322f0a8.pdfIn PDF document text
    • http://agent-spv.space/gusas4lyod.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387808/normal_5fe3bc43e4780.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487618/normal_5fcd1a1303c62.pdfIn PDF document text
    • http://tiktoktop.design/read_the_pact_by_sampson_davis_online_for_freeq46if.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425009/normal_6018dfbd496b9.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/xidazeze/41313617532.pdfIn PDF document text
    • https://s3.amazonaws.com/mejigavukolu/xiworixazejibudoligu.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_off0000c148.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC148 4952 bytes
SHA-256: 38e400160d0dc85e076593a6b6f8beee4cc8a53aa5beaf2df0b6650e41987418
font_01_sfnt_off0000d20b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD20B 9876 bytes
SHA-256: 00b30d1dbfbaacb802297a907f4b39e5ac45fa8cde50067f7d4174d4c3a4110a