Malicious PDF — malware analysis report

Static analysis result for SHA-256 98734b33f47bda6a…

MALICIOUS

PDF

90.9 KB Created: 2021-04-03 09:31:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e16eea1e76476c377aea04ab2678da6e SHA-1: 0843bfd58bbda78ae4742bf78553650ffa4fa0e9 SHA-256: 98734b33f47bda6ade1756fae4502e197f396ba1bdc110c0b9323ff2973ab1eb
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, likely intended to trick the user into visiting a phishing or malware distribution site. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. The document body, though partially garbled, contains text related to civic duties, suggesting a social engineering pretext.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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://fokemale.ru/wix?keyword=what+are+4+duties+of+a+citizen
    • http://komanegeze.22web.org/28715897371.pdf
    • https://tekazomegi.weebly.com/uploads/1/3/4/0/134017279/mozakevoputer.pdf
    • https://static.s123-cdn-static.com/uploads/4489441/normal_6004780448d13.pdf
    • http://wewazer.iblogger.org/radical_honesty_audiobook_free.pdf
    • http://greatholl.com/13894196826mkyk2.pdf
    • http://thepropheticapp.com/513339468rn0yh.pdf
    • https://nebelifufenav.weebly.com/uploads/1/3/1/4/131437331/3369140.pdf
    • https://muwikilakejo.weebly.com/uploads/1/3/4/5/134519857/3666065.pdf
    • https://cdn-cms.f-static.net/uploads/4481540/normal_602790940f73d.pdf
    • https://mozabedo.weebly.com/uploads/1/3/5/3/135323929/zujer_foredamu_zesibezeweraz.pdf
    • http://shopsmmv.site/domagumibalitaxifuvutgwf1.pdf
    • https://judexibegajojid.weebly.com/uploads/1/3/4/8/134885636/8871311.pdf
    • https://lipuriwos.weebly.com/uploads/1/3/5/3/135325722/0293e002276a2.pdf
    • https://cdn-cms.f-static.net/uploads/4470698/normal_600efb912742c.pdf
    • http://biomanua.website/nanenijadebesexf2u33.pdf
    • https://cdn-cms.f-static.net/uploads/4485569/normal_60314b4f38e61.pdf
    • http://repair-planshetov.ru/nadiradedatuborc0vq0.pdf
    • https://cdn-cms.f-static.net/uploads/4411493/normal_5fe80c698efdf.pdf
    • https://sinuvuliwazima.weebly.com/uploads/1/3/1/8/131871572/gowezumewinev-medupuwoj.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/9d203720-fc01-4a63-9a0b-c83f47c48d50/vigumesaxeberojebamo.pdf
    • http://tewidunutazi.rf.gd/85761154070.pdf
    • https://uploads.strikinglycdn.com/files/38848d53-1edd-4a92-89ac-aaad190da705/domain_and_range_worksheet_answers_key_precalculus.pdf
    • https://uploads.strikinglycdn.com/files/902cb929-b412-4924-98e7-07edaf43b75d/baby_girl_names_that_start_with_c_unique.pdf
    • https://uploads.strikinglycdn.com/files/2f3bc320-3db6-484e-909b-1adc4aa9380f/nodelidejewakewafaj.pdf
    • https://uploads.strikinglycdn.com/files/611b6b5d-03cc-4d66-925e-331c73eaf314/32352548281.pdf
    • http://mepumubim.rf.gd/78471447381.pdf
    • http://jigiwema.epizy.com/bhojpuri_video_gana_dena_bhajan.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_off00011706.bin
62cc818c1b6edd75454bd6f5f79afca6b5c500b629a6bf3070503d89d83d4435		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11706 5228 bytes
font_01_sfnt_off000128de.bin
a0fe2daada3f9176e98494b10909635b23cf183d11683fbcbfedfb157e9710fb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x128DE 2904 bytes
font_02_sfnt_off000134d3.bin
41cad6770d28dde74b312fdedf53c2e2271c9253c087c5adc9035bc49c2512c6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x134D3 11592 bytes

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