Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9dc9c37829f8041…

MALICIOUS

PDF

80.8 KB Created: 2021-03-08 21:57:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 64131cbc706f35491187848924d25c91 SHA-1: e41eea2fb1294eff1765fe8ba0bec01812875949 SHA-256: e9dc9c37829f80411a1803b231adca5c32fcbe41dae48e844a7fe4a1b32f3cf3
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'https://dafemum.ru/wix?keyword=popeyes+interview+questions+and+answers', which is likely a lure to a phishing or malware distribution site. The document body, though heavily obfuscated, appears to contain metadata related to the URL, reinforcing the attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://dafemum.ru/wix?keyword=popeyes+interview+questions+and+answers
    • http://fragcups.com/hire_interior_designer_online_indiakxtgj.pdf
    • http://najetaxu.mygamesonline.org/ice_maker_not_filling_with_water_maytag.pdf
    • http://tameeniraq.com/846646950825j8vm.pdf
    • http://madamzero.com/17753861658lwm03.pdf
    • https://static.s123-cdn-static.com/uploads/4454990/normal_60090d5823b83.pdf
    • https://cdn-cms.f-static.net/uploads/4414172/normal_600dfeda03381.pdf
    • https://cdn-cms.f-static.net/uploads/4427544/normal_60111ca571517.pdf
    • http://hookup154.online/dapunujefo31ddy.pdf
    • http://norikaloro.mywebcommunity.org/vabivigo.pdf
    • http://lumacy.site/bill_gates_biography_book_free_download347i1.pdf
    • http://xopijodujakik.22web.org/mobogenie_for_android_7._0.pdf
    • https://static.s123-cdn-static.com/uploads/4470385/normal_5fc6a5954bcb2.pdf
    • http://muzolifuvekimew.22web.org/67350441990.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://6c8ebe11-725c-420b-823a-68bc39d02ad2.filesusr.com/ugd/3e87bf_374f816b15774d6c90d515dca0d7e2ba.pdf?index=true
    • http://sojonowiwexus.rf.gd/how_to_reset_suzuki_outboard_service_alarm.pdf
    • http://tiluxusimutine.atwebpages.com/why_is_my_kenmore_gas_dryer_not_drying.pdf
    • https://aee666f7-65d2-4416-8089-42e5bd85255d.filesusr.com/ugd/c4036c_634890456d9e4af185248c448538782b.pdf?index=true
    • https://a54de82d-0003-4787-801b-d7ee719c780a.filesusr.com/ugd/8d57bd_2958c8ddf25e4c4cb5f38ad130930a6a.pdf?index=true
    • http://voxunerejowiz.epizy.com/when_do_chiasmata_form_in_meiosis.pdf
    • https://26c1613e-5d28-4fa3-89cb-3d2c9ab59faf.filesusr.com/ugd/fe83c3_fd5dcf6eb13f4345891eebeffca44da0.pdf?index=true
    • http://tapoloferazuziw.atwebpages.com/gem_of_the_ocean_full_play.pdf
    • http://bitines.myartsonline.com/jelisuletad.pdf
    • http://wivufakumetewiv.rf.gd/sijosi.pdf
    • https://9f53eded-325d-4e02-8430-7c09bd872488.filesusr.com/ugd/e04405_b49dd546013849b59b1fc5066049a61f.pdf?index=true
    • 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000100a5.bin
a4690bba8ac0b8a99f522274ebade16c089602c61a29bda91f4af44a28a1d657		 pdf-font-stream PDF embedded font (sfnt) at offset 0x100A5 5300 bytes
font_01_sfnt_off000112cf.bin
b18d63ef60e5bfbe4ce471e032ed9b79862ef834d084fb39d16fb8bac27e1c5d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x112CF 10136 bytes

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