Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f1001488ee64559…

MALICIOUS

PDF

79.8 KB Created: 2021-03-28 08:51:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 2cc6d5f5356ec1a6fc293e3f921be464 SHA-1: 03bd1f32e34b2f49a6587e5995251d24e6c320ef SHA-256: 4f1001488ee64559e454905f1d2dd130d528ad23345f2d75b1d65a30e9272c55
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a ML classifier and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to 'pelibifir.ru', which is likely used to deliver a malicious payload or conduct phishing. The document body, though heavily obfuscated, suggests a lure related to a 'funny baby dance' video.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://pelibifir.ru/123?utm_term=funny+baby+dance+in+tamil+song PDF link annotation
    • 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://uploads.strikinglycdn.com/files/18bb459e-e0c2-4c4a-96b2-bd227139bb1c/48826083936.pdfIn PDF document text
    • https://s3.amazonaws.com/bikikanafopavu/creature_3d_video_hd_song.pdfIn PDF document text
    • https://s3.amazonaws.com/pegebunov/hellboy_comic_1.pdfIn PDF document text
    • http://wulagaw.rf.gd/healthy_eating_worksheets_for_kindergarten.pdfIn PDF document text
    • http://wamodaf.epizy.com/bebidas_isotonicas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac90f173-9d8f-436c-b117-26f3b4fd6509/cloud_computing_pay_in_india.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e605e985-192e-47ba-bbb0-b7234a4c49ec/how_to_use_wolf_cub_watch_winder.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e902472-abf9-4621-a648-b790e4354fcb/how_to_connect_netgear_wn1000rp.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/efb497ef-e477-4286-afea-f974cef25afa/how_to_use_lubricant_gel_in_hindi.pdfIn PDF document text
    • http://nekaluro.rf.gd/davisomagakawepi.pdfIn PDF document text
    • https://s3.amazonaws.com/jepinebawo/76276961665.pdfIn PDF document text
    • https://s3.amazonaws.com/lazolu/gsmarena_buyers_guide_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/sixenogafopoj/write_label_reviews.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1b03622b-c928-4365-94c0-67dc3267d64b/tawudonisowowip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c6ede81-04d6-4fb8-a907-f2a8a9cf056b/nunuxoropujutupiv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/93b2694e-91ae-4cb3-8105-6230051419d5/64467761473.pdfIn PDF document text
    • https://s3.amazonaws.com/pubopelej/bosiwatowuve.pdfIn PDF document text
    • https://s3.amazonaws.com/makumapikeze/89747426907.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb583409-e848-4c78-9b6f-442fb1fb3d64/will_the_longest_ride_be_on_netflix.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_off0000ee07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE07 5244 bytes
SHA-256: e9763dcc5c95773f55d13e827f1faeaa8b9c49531322658240ae0abb913c989c
font_01_sfnt_off0000ffc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFC8 10532 bytes
SHA-256: 0084f6c0b79c1b6f3239ad1bb585b21843ffb352674ff1d0276256f17022c3cf
font_02_sfnt_off000123d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x123D1 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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