Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7af7e7b53012799…

MALICIOUS

PDF

83.5 KB Created: 2021-03-29 10:53:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 62bf206b2dfc4279f356f087489fd4f9 SHA-1: 908328032d0311a7be68c07ded37928e3d6575b4 SHA-256: f7af7e7b530127990b58aa097406f4c484fbc9e355ddd4161701380f741597af
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URI pointing to a suspicious domain, likely intended to trick the user into downloading a malicious payload. The document body, though heavily obfuscated, suggests a lure related to a search query, aligning with phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://resalured.ru/award?keyword=difference+between+dot+product+and+cross+product+pdf PDF link annotation
    • http://jekefidaz.mygamesonline.org/what_are_the_methods_and_techniques_of_teaching.pdfIn PDF document text
    • http://about-central.com/75313527200lulb7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367667/normal_5fd8e37760686.pdfIn PDF document text
    • http://copyrightshelpcenter.com/fagoninowevezigaza0d.pdfIn PDF document text
    • http://mamontov-net.cc/apology_letter_to_boss_templatep26zj.pdfIn PDF document text
    • http://lnstagram-help-businesss.com/79110671811x7cin.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452850/normal_5fdd78d4373e1.pdfIn PDF document text
    • http://mirror-x.org/10000_reasons_guitar_chordsgecve.pdfIn PDF document text
    • http://flowerport.market/doodle_reference_sheet6s9x4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481515/normal_602212e5d7e79.pdfIn PDF document text
    • http://dimax-matrasy.ru/is_the_giant_in_big_fish_real0pvrv.pdfIn PDF document text
    • http://sodalabs.club/please_find_attached_the_form_you_requestedimj71.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://laxukumelukadut.myartsonline.com/nisafogibifo.pdfIn PDF document text
    • http://ninovaxabax.epizy.com/why_does_my_refrigerator_light_not_work.pdfIn PDF document text
    • https://s3.amazonaws.com/rogugagatuf/el_poder_de_la_oracion_letra_y_acordes.pdfIn PDF document text
    • https://s3.amazonaws.com/fovezewi/37076004566.pdfIn PDF document text
    • https://s3.amazonaws.com/xelimewat/ali_malli_mamai_song_mp4.pdfIn PDF document text
    • https://s3.amazonaws.com/vizegemawokaxe/album_songs_tamil_video_hd.pdfIn PDF document text
    • http://nimunofat.epizy.com/surah_al_waqiah_mishary_rashid_alafasy.pdfIn PDF document text
    • http://netawuwimirixor.onlinewebshop.net/how_to_identify_fruit_trees.pdfIn PDF document text
    • https://s3.amazonaws.com/pafiganovavi/american_history_x_1998_parents_guide.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_off0001027c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1027C 5348 bytes
SHA-256: 9f6aa8cb0b057a54cf140cdde42a568833e130990af95059c762ff269adc80dc
font_01_sfnt_off000114ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x114CA 12904 bytes
SHA-256: 73427d8affd60188aef06fa293a3b44d73c29b546f4f909eb6e200867655f316

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