Malicious PDF — malware analysis report

Static analysis result for SHA-256 aba11637380cb93a…

MALICIOUS

PDF

81.9 KB Created: 2021-03-16 07:46:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6df9f275a437fcf3eed6c5fe5660d71e SHA-1: be96a1428ba872f25f1a3c51c1ed1b7cd4d55bc6 SHA-256: aba11637380cb93a58e2a367eec6817006e9448e2dea00085751b00a8574a823
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that leads to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to a malicious site, likely as part of a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://vilenefex.ru/aws?utm_term=the+long+way+to+a+small+angry+planet+sequel
    • http://justamorem.com/vikutejofug1mjs6.pdf
    • http://hookup757.fun/98353821805fqwdw.pdf
    • http://damita.fun/31565968422fcijn.pdf
    • https://cdn-cms.f-static.net/uploads/4385848/normal_603cb94020055.pdf
    • http://edevletorg.com/will_humans_eventually_live_foreveryrsg4.pdf
    • https://cdn-cms.f-static.net/uploads/4495385/normal_6027af64a943e.pdf
    • https://cdn-cms.f-static.net/uploads/4369502/normal_6022853e8cf42.pdf
    • http://bodyita.space/ejercicios_de_subordinadas_adjetivasfp4t2.pdf
    • https://static.s123-cdn-static.com/uploads/4452587/normal_5fdd6ef1d1663.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/gozilum/job_order_cost_sheet_example.pdf
    • http://reresolakogix.rf.gd/clumsy_ninja_hack_android_1.pdf
    • http://rifoxofome.rf.gd/diabetes_canada_guidelines_medications.pdf
    • https://dd907c4b-492b-4b4d-bf3c-9f0b7a2bd2c7.filesusr.com/ugd/96a426_f5b89af7375c44629e9b1cfbe97e91d9.pdf?index=true
    • https://6bda1257-ae7a-4fac-840f-d5dfc178f195.filesusr.com/ugd/f4de5e_cc1858789eaf4fd5959b7cc67e3bfa9f.pdf?index=true
    • https://1ffb5d6c-d890-49e0-9b87-dc10fbfa49e2.filesusr.com/ugd/8bc2a6_a8fba2073be0458196c56e9d4a79f896.pdf?index=true
    • https://e966359d-176b-477a-9ad9-c314bea94227.filesusr.com/ugd/fa6f14_3d3b73b00c5c46da92088fb5c26ae01d.pdf?index=true
    • http://xiwularofevomu.epizy.com/36364095670.pdf
    • https://s3.amazonaws.com/pasutiz/natekifepuwi.pdf
    • http://gojaxuga.epizy.com/2045591589.pdf
    • http://rabibunipidozok.epizy.com/weridaxitapenijif.pdf
    • https://bf808793-8b46-4c54-8b11-319763181fa0.filesusr.com/ugd/0d018b_f4f525043018470db352d3353d0b8bf1.pdf?index=true
    • https://2dc0326d-ac60-47d8-bf46-f2dc9d334570.filesusr.com/ugd/21b4a7_643266d0678045898a91d46589b98fea.pdf?index=true
    • https://14319df0-7947-4f0d-bbb3-eaa17d5eb23e.filesusr.com/ugd/c45f38_eb701481cb1b4f3fa4d8c8b027a7430d.pdf?index=true
    • https://s3.amazonaws.com/fokapikow/32118128208.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f449.bin
7b796d3b927467a11a197aa34c2e623c0d0356d89845ec7e32d95ef85afb1baf		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF449 5336 bytes
font_01_sfnt_off0001065f.bin
db470cfe9324c1ca0c5d7a6ccb6ac6c7d61fe7a2c908af8516ffe315462be523		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1065F 10836 bytes
font_02_sfnt_off00012b85.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12B85 4324 bytes

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