Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1698a384fe0720f…

MALICIOUS

PDF

77.2 KB Created: 2021-03-30 10:06:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7b5ce86374858db3a548cb537ca509f0 SHA-1: 080aafda855b7c2e16dde9ded4dd752b8ffa900e SHA-256: f1698a384fe0720ff8847e8f2f9559fe588b72578002585b27d8d71aca078177
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains an embedded URI pointing to a suspicious domain, likely intended to deliver a secondary payload or redirect the user to a phishing site. The document body, though heavily obfuscated, suggests a lure related to financial studies, aligning with common phishing tactics.

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://pelibifir.ru/strik?utm_term=how+to+study+financials+of+a+company
    • http://susekilimu.medianewsonline.com/chicken_digestive_tract.pdf
    • http://zedakobogesa.mypressonline.com/add_watermark_adobe_reader.pdf
    • https://cdn-cms.f-static.net/uploads/4385413/normal_60171f7e69724.pdf
    • http://likedizar.medianewsonline.com/bakejekenexusozubaledu.pdf
    • http://kovatafob.mypressonline.com/business_model_sample.pdf
    • https://cdn-cms.f-static.net/uploads/4426257/normal_605617c2736fd.pdf
    • http://tufofol.medianewsonline.com/m_butterfly_play_cast.pdf
    • http://dadevizevarek.scienceontheweb.net/atmega328p_pin_diagram_description.pdf
    • https://static.s123-cdn-static.com/uploads/4423452/normal_5ffb310366b23.pdf
    • https://cdn-cms.f-static.net/uploads/4419425/normal_60492ab71729f.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/gofiguj/how_much_does_it_cost_to_hire_a_dj_for_a_wedding.pdf
    • https://s3.amazonaws.com/geraromu/26929923681.pdf
    • https://s3.amazonaws.com/luropi/yalla_shoot_apk_android.pdf
    • https://s3.amazonaws.com/figugipopar/acceptance_is_the_answer_audio.pdf
    • https://s3.amazonaws.com/midizaxopazeji/91631185476.pdf
    • http://palelezugob.onlinewebshop.net/vomilaja.pdf
    • http://saxodanokijaj.atwebpages.com/how_to_do_crochet_box_braids_on_short_hair.pdf
    • http://nosawakudik.myartsonline.com/digestion_y_absorcion_de_proteinas_en_monogastricos.pdf
    • https://s3.amazonaws.com/gatazeromij/49831760366.pdf
    • http://bivojeda.atwebpages.com/yt_3000_attachments.pdf
    • https://s3.amazonaws.com/rabewiruzitewa/93551108747.pdf
    • https://s3.amazonaws.com/xonobijikivo/78546302459.pdf
    • http://pekafujojef.onlinewebshop.net/tutorial_adobe_photoshop_cc_2020_bahasa_indonesia.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f005.bin
968eecac34c74346489d83f46c68babab564071c5db06eb1b6f06a1ac91e07b3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF005 5360 bytes
font_01_sfnt_off0001024c.bin
9140abe6d03fad384a7fd6e2319484da352777789a2cff5938352a8f41907fef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1024C 10872 bytes

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