Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ca08752845bfe2b…

MALICIOUS

PDF

80.5 KB Created: 2021-03-08 05:23:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: 9e09fb411e2bb0ada2a58cb786279189 SHA-1: e3c524f64e156b7a180d3d573f9cbbb6382b1be7 SHA-256: 0ca08752845bfe2b71607464bc6e87c8e5aeebdc3978f6255a0572dc17ac6ef8
126 Risk Score

Malware Insights

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

The PDF contains an embedded URL that directs users to a link farm on disposable hosting, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://pelibifir.ru/wix?keyword=social+media+worksheet+ks3 PDF link annotation
    • https://cdn.sqhk.co/vadetegubufo/juiibgc/70263181229.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443819/normal_60403b2d6aa21.pdfIn PDF document text
    • http://kafalukuwemi.mygamesonline.org/dixini.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417033/normal_60089565738b9.pdfIn PDF document text
    • https://cdn.sqhk.co/tezasevimab/hghjaDf/bugenifosig.pdfIn PDF document text
    • http://dipufuvolog.iblogger.org/is_nordic_track_good_for_knees.pdfIn PDF document text
    • https://cdn.sqhk.co/definuseju/ehbjcPD/minecraft_games_online_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/dorusafe/28QBXgg/marasefuwu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369162/normal_5ffb96c9ba881.pdfIn PDF document text
    • https://cdn.sqhk.co/tezizejaropu/mhb6ggj/lixixonuw.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/d5ce7d31-f5f1-45e9-88a4-580b1a96b97a/que_es_un_seminario_taller.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ab71544-ea30-4d7b-9dd9-49d7f6518d5a/90514947028.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/54f6e259-2128-451e-b580-be0c73ede09c/miller_dynasty_350_manual.pdfIn PDF document text
    • http://vifidunut.epizy.com/brother_3170cdw_ink.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b6a893bf-af46-49a6-a53b-c63cf6cb2f41/xelip.pdfIn PDF document text
    • http://vejegaba.atwebpages.com/tagumonibos.pdfIn PDF document text
    • http://puwawujabewup.rf.gd/55484708938.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd684009-b7cb-491d-a598-e1c94e483aac/netibiwaredajuvogevel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2fbcfb57-241c-415a-b12d-8d216611e57e/skyrim_guide_to_magic.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a6abfe7-f36b-4b76-bd44-9b25faf2c257/rolewevapuwi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/58319e96-39b7-46c2-ab8f-4cf85c9dbe46/80393231510.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_off0000ff09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF09 5600 bytes
SHA-256: 2274ff2b21f8be1198621f31fd0e57b09aafae4fbc724b389fc5919ab1458fc2
font_01_sfnt_off000111fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111FD 10212 bytes
SHA-256: d49723a93e64043b9995849102f909aa4b03a03d6cc9b9fa41798a72476ba1e0

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