Malicious PDF — malware analysis report

Static analysis result for SHA-256 714b6d34eea83aa6…

MALICIOUS

PDF

87.5 KB Created: 2021-03-06 21:50:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 9bc191390a8ea6bdfa26a6da6ee20ef8 SHA-1: 947fcd7ea59417391f3034c66354980d733e0eea SHA-256: 714b6d34eea83aa610f24f34ea06b10916a33b015ee920c24433d73976a13349
164 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses an urgency-based lure. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://dugedepap.ru/123?utm_term=the+secret+history+of+wonder+woman+essay PDF link annotation
    • http://paxezimusosesa.scienceontheweb.net/common_core_math_multiplication_examples.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4531523/normal_60044a77af1cf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392664/normal_6041fc71dd159.pdfIn PDF document text
    • http://gesetaxoxu.sportsontheweb.net/ruzobipiw.pdfIn PDF document text
    • http://fesunasisodenod.getenjoyment.net/33899896154.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366017/normal_5ff43164a9c92.pdfIn PDF document text
    • http://bafujoresepivi.iblogger.org/61717457293.pdfIn PDF document text
    • http://xexapitanegis.getenjoyment.net/present_perfect_subjunctive_spanish_exercises.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/xonobijikivo/aditya_360_movie_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/voxipanovigepiv/apple_user_agreement.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/144943c4-7858-426e-8817-5cfbb323ba2a/ruvudulamomelinudinojanux.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b43b40f-56cf-41ea-8611-0475afc3d7d8/86477203790.pdfIn PDF document text
    • https://62abf401-5fc9-4991-ac00-cb6a0c8cf8ec.filesusr.com/ugd/e4ff69_fae308dc03224f829a7c04c770b5c726.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fakuguvil/daviwuvaz.pdfIn PDF document text
    • http://lixaxezubor.rf.gd/free_agricultural_science_textbook.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9e68cf8-81f6-4cae-8a37-f654c3d17ff6/how_to_use_the_mr_coffee_grinder.pdfIn PDF document text
    • http://kowogipat.epizy.com/how_to_program_black_comcast_remote_to_samsung_tv.pdfIn PDF document text
    • http://pavebutom.epizy.com/10738583094.pdfIn PDF document text
    • https://03df18d0-0a94-4077-8b44-1f3cf8b7c870.filesusr.com/ugd/23a6c3_055549acb153457faca96f1503115fec.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/laginekux/nibuvimaxovatimu.pdfIn PDF document text
    • https://ed0f7819-48b4-4c0d-9119-93de03d81b9c.filesusr.com/ugd/e481ce_e1b1074622454b3fafacca2479cf9e86.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zumomasugipeno/beselumedobonuxeg.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010b94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B94 5160 bytes
SHA-256: 60482e8dd488e94cd8b6a40c1bd8c251ad44363c4edf9cb383f740b27726356b
font_01_sfnt_off00011d03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D03 10960 bytes
SHA-256: 7af701e702dde2046bde0c1bcba1e1b289405d126784aafaf12c65cb7cd0b884
font_02_sfnt_off0001423a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1423A 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378