Malicious PDF — malware analysis report

Static analysis result for SHA-256 2395f899194e5c43…

MALICIOUS

PDF

70.9 KB Created: 2021-02-15 23:57:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 04e2773c0403fa07fcda9f029f79d691 SHA-1: dbe84aad5b2f61ebd4ec5453c1bb3bbc92a32bcb SHA-256: 2395f899194e5c43fdb33f650fa1be50ae6d0953144f7a3ca9323d167110e88e
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, specifically flagged as a phishing trojan. It contains an embedded URL that directs users to a page discussing diabetes diets, likely a lure to disguise malicious intent. The file's structure and content suggest it is designed to trick users into clicking the link, potentially leading to further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://maypoin.ru/wb?keyword=what%20is%20the%20best%20diet%20for%20type%202%20diabetes PDF link annotation
    • https://cdn.sqhk.co/xuxodokoju/bhihgge/82560177555.pdfIn PDF document text
    • https://cdn.sqhk.co/xogeloke/hjh0RHW/dubisusekosibutafidoj.pdfIn PDF document text
    • http://cocobuka3.xyz/5180422745773vht.pdfIn PDF document text
    • http://itravelimpressions.com/37164564526tvxq6.pdfIn PDF document text
    • https://cdn.sqhk.co/dewavasese/aidIwOn/deckeleven_s_railroads_2_apk_mod.pdfIn PDF document text
    • http://art-practice.org/177_mental_toughnesspe3vf.pdfIn PDF document text
    • http://trysoda.club/isidora_sekulic_saputnicirlgln.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/varolexexus/78616482790.pdfIn PDF document text
    • https://s3.amazonaws.com/pasawe/mudataserab.pdfIn PDF document text
    • https://s3.amazonaws.com/kosamupim/50003367722.pdfIn PDF document text
    • https://s3.amazonaws.com/faluzotixupi/bsf_admit_card_sarkari_result.pdfIn PDF document text
    • https://s3.amazonaws.com/xafaxotaful/common_denominator_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/geraromu/52383127788.pdfIn PDF document text
    • https://s3.amazonaws.com/folexapurilowe/lab_report_examples_physics.pdfIn PDF document text
    • https://s3.amazonaws.com/tobito/1445293789.pdfIn PDF document text
    • https://s3.amazonaws.com/bodajaku/tojab.pdfIn PDF document text
    • https://s3.amazonaws.com/lomogas/winrar_full_version_free_for_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/bisapovepizaj/libemapoba.pdfIn PDF document text
    • https://s3.amazonaws.com/watajive/avidemux_free_mac.pdfIn PDF document text
    • https://s3.amazonaws.com/biwubeleba/buenos_aires_guided_city_tour.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxutedi/vevo_app_free.pdfIn PDF document text
    • https://s3.amazonaws.com/bojafazes/audit_plan_template_excel_free.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_off0000d4bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4BF 5484 bytes
SHA-256: 7dc1501b1a92fab763d2b88bcdafd5ddd5100c45bdc461ce6cc949f6f7df5c1f
font_01_sfnt_off0000e76e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE76E 11820 bytes
SHA-256: e87733614b67b9fdda82bd088751a7c1f58f6ea5ea9c577e1cae38520089b7c1

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