Malicious PDF — malware analysis report

Static analysis result for SHA-256 1eed01841446d004…

MALICIOUS

PDF

72.5 KB Created: 2021-02-22 07:54:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 26afe0c7e977deb6bb2250b1d58fc1a1 SHA-1: de996400dc39e22160c61d58686409b573efdb23 SHA-256: 1eed01841446d004bcedb7f6e738d97d01edc90f2a47728a693746a85a9a936f
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URI pointing to a suspicious external domain. The ML classifier and ClamAV detection strongly indicate maliciousness. The document body, though heavily obfuscated, appears to contain metadata related to the 'theme of fire and ice by robert frost', suggesting a lure to disguise the malicious intent. The presence of external URIs suggests the document is intended to redirect the user to a potentially malicious site for further exploitation or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://bologen.ru/123?utm_term=theme+of+fire+and+ice+by+robert+frost PDF link annotation
    • https://cdn.sqhk.co/sepunaro/hghejc2/used_happier_camper_traveler_for_sale.pdfIn PDF document text
    • https://cdn.sqhk.co/tititafoza/iYiyZhg/game_hunter_discounts_for_steam.pdfIn PDF document text
    • http://timecodes.net/lamobebegarugegutjxtjw.pdfIn PDF document text
    • https://cdn.sqhk.co/fefowofuk/5HTcHji/happy_wheels_full_version_download_unblocked.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418184/normal_6001993b4293a.pdfIn PDF document text
    • https://cdn.sqhk.co/duvapegoleva/hj5ggha/photo_color_changer_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/xovujiroveg/sibigpH/megasapenajuxomobalen.pdfIn PDF document text
    • https://cdn.sqhk.co/febenanedibu/g4GgdgI/21475572329.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468534/normal_6018c1a98335b.pdfIn PDF document text
    • https://cdn.sqhk.co/dutedape/gdAnGia/special_agent_fbi_starting_salary.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466146/normal_5fe236de6ff38.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407747/normal_60117865bac2f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tonesovuxor.rf.gd/tejiloviz.pdfIn PDF document text
    • https://s3.amazonaws.com/tupofelasujewas/11881727510.pdfIn PDF document text
    • https://s3.amazonaws.com/lakujusitejojet/full_form_of_nahco3.pdfIn PDF document text
    • https://s3.amazonaws.com/remuv/posikadi.pdfIn PDF document text
    • http://lavodusepigixu.rf.gd/android_auto_app_play_store.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000decc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDECC 5420 bytes
SHA-256: ea0930507c7106f209b6e522b646012bc87a9624091214f6de03efbe0ab90276
font_01_sfnt_off0000f113.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF113 10684 bytes
SHA-256: 0ade44b1afbb0c3e5092676c7825b237bc5928a8403c5316829be197f87fba9b

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