Malicious PDF — malware analysis report

Static analysis result for SHA-256 454d2d3ee92a2b5a…

MALICIOUS

PDF

83.2 KB Created: 2021-03-20 15:02:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 28a14608c3ceddd343b963960d839731 SHA-1: 5711409c83cedf0b4a60e708e54386c4fc440c25 SHA-256: 454d2d3ee92a2b5a515d9cf4723ea8057bffbfcd5c26040edf7012f38d5838a7
156 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains a large number of external links, with a primary URL pointing to a suspicious domain, likely intended to redirect users to malicious content. The presence of embedded URLs and the PDF_SEO_LINK_FARM heuristic suggest an attempt to create a link farm for SEO manipulation or to host phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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 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.
  • 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://resalured.ru/strik?utm_term=odyssey+fagles+audio PDF link annotation
    • https://revikavebizuxev.weebly.com/uploads/1/3/4/3/134383550/xolopez.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446026/normal_5fdd088f98983.pdfIn PDF document text
    • https://kufojomarolov.weebly.com/uploads/1/3/4/4/134401526/51809.pdfIn PDF document text
    • https://jipubegu.weebly.com/uploads/1/3/1/0/131070098/setawikar.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422134/normal_60107930d0926.pdfIn PDF document text
    • https://voruvagozi.weebly.com/uploads/1/3/4/7/134742827/2ff344.pdfIn PDF document text
    • https://davugunibelerab.weebly.com/uploads/1/3/4/6/134612729/9acf4047.pdfIn PDF document text
    • https://bewodopogogubak.weebly.com/uploads/1/3/4/8/134886142/2767229.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427085/normal_6017066f5233b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369323/normal_5fd7b0abe53b6.pdfIn PDF document text
    • https://pezimanazeto.weebly.com/uploads/1/3/5/3/135309923/muvikekufuzusuze.pdfIn PDF document text
    • https://nipapisowoxodo.weebly.com/uploads/1/3/5/3/135349464/e0ebc488.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/tufitijinexu/bexavegigi.pdfIn PDF document text
    • https://s3.amazonaws.com/womirofop/clash_royale_chest_opener_simulator.pdfIn PDF document text
    • http://musavojiresi.epizy.com/tavesekil.pdfIn PDF document text
    • https://a3c35cc3-4a3f-4d41-ab51-8b3e4b114d30.filesusr.com/ugd/2b25b5_5050e50d8fcf4584b9f013cacec5a097.pdf?index=trueIn PDF document text
    • https://2a497570-3881-454f-aefc-229a18bbdf22.filesusr.com/ugd/83e24f_af720da5fd1843c8bf11db641644c034.pdf?index=trueIn PDF document text
    • https://dbb1fad9-9c05-458f-9e32-bc0b7f65d7ec.filesusr.com/ugd/451461_19da0dcf136247abb737e466b36ccf5f.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/ropidadegaxut/gamijabenudikitawemafo.pdfIn PDF document text
    • https://f74ea38a-ab8d-49a0-8d31-9a1d7ce64423.filesusr.com/ugd/5ceade_8a1b7806bee0489aac0377bc170f574f.pdf?index=trueIn PDF document text
    • http://bipunasozusi.epizy.com/dusutibazusemifopiz.pdfIn PDF document text
    • http://fumonabuda.rf.gd/pet_safe_dog_collar_manual.pdfIn PDF document text
    • http://fuxodenajakifut.epizy.com/back_workout_program.pdfIn PDF document text
    • https://s3.amazonaws.com/tobovunoberiki/powerpoint_presentation_templates_simple.pdfIn PDF document text
    • https://s3.amazonaws.com/kakef/wijoguwefutasudovideje.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_off00010a1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A1E 5108 bytes
SHA-256: 24e302fa3155dff7f43521fa8bba1bc9a3a81f51901849e55ca1cf1646d69c7b
font_01_sfnt_off00011b9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B9E 10924 bytes
SHA-256: 2babf75e0c671d9222911f732a456a3271a79d986ff0a88f781c5c84d2c9f5e7

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