Malicious PDF — malware analysis report

Static analysis result for SHA-256 08b8bdfb71793e05…

MALICIOUS

PDF

70.9 KB Created: 2020-11-19 18:40:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 00297bc5fb13dc14949060afe990fa45 SHA-1: 9db9f90e4e5449411feb90225e61315a3ad33523 SHA-256: 08b8bdfb71793e055fb16f1c16e11dc5ec38a9900a83d5ba53653eec7d8cbfb7
164 Risk Score
Tags
free-cdn-ebook-manual-lure

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. The file embeds a large number of external links characteristic of an SEO link farm and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://trafffi.ru/strik?utm_term=how+do+you+download+.wav+files+to+yo PDF link annotation
    • https://puzemebakojufem.weebly.com/uploads/1/3/4/2/134234574/1724290.pdfIn PDF document text
    • https://bapefakujina.weebly.com/uploads/1/3/4/4/134483882/gasurapu_fidedolun_futijerosagaxi_riwadewovolejo.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/d112a122-95c1-4bdb-92f9-c3b382572211/soduzifu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e22ebb28-1d1f-4239-9965-19f47b9e54e4/32893217841.pdfIn PDF document text
    • https://s3.amazonaws.com/dofufiri/maradona_malayalam_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/lonisozaxozajavegatofi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f70592f9-2a6d-46bf-aa8d-1df9fe406911/bozitagozawi.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/96632242262.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88f5ecf8-8a19-4b36-be63-96daf573a7d9/rezedobawemutuzi.pdfIn PDF document text
    • https://s3.amazonaws.com/xifabilejilab/xodikegif.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/069e5584-ebd4-4e82-a111-b832dfed911e/dasozemidikagirawob.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f82eff44-c25f-4b64-a51a-9f69bf036fd9/16691213835.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/45f0d544-b7f6-466d-b8cc-554cd6abbaec/nusifigiwesosi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b8b6251e-f82b-4d1b-9533-fa8cf369ea89/daxisije.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/24ba0b8e-9400-49d3-882f-f2b5cf59efff/24547822186.pdfIn PDF document text
    • https://s3.amazonaws.com/leributafa/brenau_intranet_campus_web.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8544c1e1-d0e9-4455-b749-eb6249b90250/desinofasinaxelev.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_off0000d83a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD83A 5052 bytes
SHA-256: 03a102019117fba366286237c3308d8e5eacb34e863115bc60edd69a5508b48e
font_01_sfnt_off0000e9a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9A3 10648 bytes
SHA-256: e6a8b11846afbf361ba6d48186d9eee973570487d1e424e42cd5ef284d941342

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