Malicious PDF — malware analysis report

Static analysis result for SHA-256 8dee80b40b59f4ed…

MALICIOUS

PDF

74.6 KB Created: 2021-04-14 02:19:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: ae4012623354cc02bdfc228a89d9ec5a SHA-1: d5819bb55f303f294200d3e8a15c2a7e8a9e4b2b SHA-256: 8dee80b40b59f4ed8cbb1195a871d680f87547017c6af0cf0023fc851e953d69
286 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.007 JavaScript

The PDF file contains numerous external links, many pointing to disposable hosting, and impersonates Apple to trick users into clicking a link. The 'SE_PASSWORD_ARCHIVE_LURE' heuristic suggests the document may be instructing users to open a password-protected archive, a common tactic to bypass gateway security. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 8

  • 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.
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://rivoliga.weebly.com/uploads/1/3/5/3/135311175/tedazixa_dibepoto.pdf.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://xezojetit.ru/strik?utm_term=how+to+reset+to+factory+settings+my+motorola PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4448330/normal_6046139602d4a.pdfIn PDF document text
    • https://rivoliga.weebly.com/uploads/1/3/5/3/135311175/tedazixa_dibepoto.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369142/normal_6069784b0df34.pdfIn PDF document text
    • https://jefamiwufilidiv.weebly.com/uploads/1/3/1/4/131409158/c1b8ad6ed.pdfIn PDF document text
    • http://rubyshup.space/jimmy_choo_choo_punjabi_song_mp44ffnz.pdfIn PDF document text
    • http://msertis.xyz/us_history_quiz_appsg232.pdfIn PDF document text
    • http://fajutixosisi.22web.org/18367498975.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://b760d8db-9746-4821-aa2b-94c9f806d328.filesusr.com/ugd/26ce45_1758b279ea3b40b7ac44e40ca0612c63.pdf?index=trueIn PDF document text
    • https://3a00e800-a8eb-44ae-aafc-ae9aecab8e06.filesusr.com/ugd/1715bf_191091b4038745daa212f6800282c19b.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/julaxel/79219864266.pdfIn PDF document text
    • https://4f7f339c-9ee9-4921-a7ad-794169edd555.filesusr.com/ugd/fea72b_e0d997cf66914c4094cf3c74c99532d9.pdf?index=trueIn PDF document text
    • https://a9b7993f-6967-48c1-a2c3-d5bc86fe985f.filesusr.com/ugd/ea2be3_b892edf8bfe94cbb929ee9534a17a7ec.pdf?index=trueIn PDF document text
    • http://rizusuzapil.rf.gd/causative_have.pdfIn PDF document text
    • http://kafutifuvi.rf.gd/american_beauty_script_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/benubapopikaj/77928551112.pdfIn PDF document text
    • http://vidavizulovox.rf.gd/do_you_lose_muscle_as_you_get_older.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_off0000e679.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE679 5356 bytes
SHA-256: c5e0c7c1b86f7694c8c2bfb9b12f450780ade1cd9f31874dfa4c9c15e89c5e2c
font_01_sfnt_off0000f8b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8B2 10836 bytes
SHA-256: ae0653f3a6de516dbff5492f71243995fcade7a994c3f4baaa6e517c56245966

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