Malicious PDF — malware analysis report

Static analysis result for SHA-256 98f19dfb0aba58ba…

MALICIOUS

PDF

80.6 KB Created: 2021-03-19 19:03:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 400921aa8cce91a797c26b8bd8a02349 SHA-1: 1ac5e76fc3004edabae2ce4b6272ff02ed47571b SHA-256: 98f19dfb0aba58ba724be04e1d372793a30d8aae93e970ea0f195d669045c2b5
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ClamAV and an ML classifier. It contains an embedded URI pointing to 'botokaw.ru', which is likely a phishing or malware distribution site. The document body, though heavily obfuscated, appears to contain text related to condolences, suggesting a social engineering lure. No scripts were extracted, but the presence of external URIs and the malicious verdict strongly indicate a phishing or downloader attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://botokaw.ru/wix?keyword=frases+de+aliento+para+un+amigo+que+perdio+a+su+padre PDF link annotation
    • https://cdn.sqhk.co/kupuruvew/bYhhKgR/need_for_speed_most_wanted_ps2_ebay.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473359/normal_603ae8b82714b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470412/normal_5ff4f5b08a010.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446496/normal_5fdbf210eca09.pdfIn PDF document text
    • https://cdn.sqhk.co/jemedolena/avidigE/transformers_animated_full_episodes_online.pdfIn PDF document text
    • https://cdn.sqhk.co/nugopanage/qhhahjK/53108945820.pdfIn PDF document text
    • https://cdn.sqhk.co/dojopaxitovi/huXBheN/85960051365.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450639/normal_60459dacab051.pdfIn PDF document text
    • https://cdn.sqhk.co/zafilivopupu/ia1Pmig/12773744836.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365541/normal_604195d391901.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454990/normal_5ffb7bb000aa4.pdfIn PDF document text
    • https://cdn.sqhk.co/semiwewedazi/J0jgfU0/russellville_ar_catering_services.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/zodawanuror/bottle_green_formal_shirt.pdfIn PDF document text
    • https://s3.amazonaws.com/zurovajij/wondershare_video_editor_templates_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/29551bf0-a91a-4663-8971-0b8c410fdd69/42677779522.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/69acfd01-0afa-4dd8-9650-426a0c2f5f29/navamokerun.pdfIn PDF document text
    • https://s3.amazonaws.com/kumasala/kishore_kumar_songs_free.pdfIn PDF document text
    • https://s3.amazonaws.com/jojitagifuva/electric_guitar_lessons_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/matogapibelifiv/52150333848.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f50efcb0-03d3-48db-ab0b-64aff15498b6/starting_your_own_clothing_line_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/35d660ed-f909-4061-bf08-55d6c842cd94/pusakuwij.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/10b10acc-c255-478c-9d78-cd88dbab79f0/kisimigolixawuka.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ec75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC75 5244 bytes
SHA-256: 3f8534dd848dca966329053b0aff8f008017ce982d639cf704a7ed3797bd3a6b
font_01_sfnt_off0000fe29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE29 11956 bytes
SHA-256: ab102ca9e7154e3353df0ab1f0a012307a226e19ee4238b0f88fe1f81d176550
font_02_sfnt_off0001245e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1245E 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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