Malicious PDF — malware analysis report

Static analysis result for SHA-256 dec92bb99789fc73…

MALICIOUS

PDF

80.3 KB Created: 2021-03-01 07:16:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4ee0305f865c8463e9a9a043d811bc72 SHA-1: 98913fa75f49b14c74c054ca851a59299f99ea77 SHA-256: dec92bb99789fc73d75b2c82069e5eb03fddb638ee14258308f34e920e2207c8
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 URL disguised as a search result for cooking information. The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded URL likely leads to a phishing or malware distribution site, attempting to trick the user into downloading a further payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jumiwimov.ru/123?utm_term=how+long+to+cook+a+ham+roast+in+the+oven
    • http://salonly.xyz/mafosokubujapurijocltij.pdf
    • https://cdn.sqhk.co/jaxugaveg/jcjcLmI/20194576315.pdf
    • http://kiwirixup.22web.org/algebra_questions_and_answers_for_grade_10.pdf
    • https://cdn.sqhk.co/wujakegu/adAq0z8/32624074138.pdf
    • http://openplafond.xyz/tikuvefubugom5k4yy.pdf
    • http://bazuzog.22web.org/bumotowabotor.pdf
    • https://cdn.sqhk.co/xenudipu/ieE8Xjk/arenal_volcano_national_park_zipline.pdf
    • https://cdn.sqhk.co/xotabuti/shjzXFf/ocotillo_wells_rentals.pdf
    • http://xelasurugopu.mywebcommunity.org/38283563882.pdf
    • http://jolujunutido.iblogger.org/ibps_crp_po_admit_card_2018.pdf
    • http://susurrus.space/bintang_bier_logo_free6leje.pdf
    • http://pugezesiw.mygamesonline.org/lazarillo_de_tormes_castellano_actual.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://ratobewiwigu.atwebpages.com/seluburo.pdf
    • http://zoninenawumu.epizy.com/31257134093.pdf
    • https://s3.amazonaws.com/lekezaru/lejotokosawupimumis.pdf
    • https://s3.amazonaws.com/mamibis/xudogizapedis.pdf
    • https://s3.amazonaws.com/xozeb/62536035205.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f0a2.bin
eca3bbbb1e7945396ee8a2dae92146498d1ed3d5f246b9a48f3db912a8f75024		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF0A2 5176 bytes
font_01_sfnt_off0001021f.bin
747fdde2097b0ad25591aaf2a32a4438172135c6ecbdb8c4e01d7b2c9cd3e552		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1021F 10336 bytes
font_02_sfnt_off0001257e.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1257E 4324 bytes

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