Malicious PDF — malware analysis report

Static analysis result for SHA-256 18a90616891a3a07…

MALICIOUS

PDF

73.7 KB Created: 2020-12-27 08:27:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: e51685d0c09a58227faeafc61cfed9cc SHA-1: 19ce7b98255b6a4a830d555ab8cb3c9822e9bfcb SHA-256: 18a90616891a3a07caebc2dc8050c5aa77d0404a60e21fb80430104f5c935e37
96 Risk Score

Malware Insights

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

The PDF document contains a URL that is flagged as malicious by ClamAV and ML classifiers. The document body, though heavily obfuscated, appears to contain text related to the URL's query parameter, suggesting a phishing or redirection attempt. No scripts were extracted, but the presence of a malicious URL strongly indicates a malicious intent, likely to redirect the user to a phishing site or to download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://traffnew.ru/123?utm_term=how+far+can+a+10%252F22+shoot+accurately PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4503279/normal_5fd9ac934f3fd.pdfIn PDF document text
    • https://cdn.sqhk.co/wuvupalib/Qhduokz/4_color_card_game.pdfIn PDF document text
    • https://cdn.sqhk.co/kozuvurop/aSidwgh/nupazodegojake.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479938/normal_5fc35fd0b7ebf.pdfIn PDF document text
    • https://cdn.sqhk.co/ranuvore/LgihhXl/spider_man_comic_book_animated_series.pdfIn PDF document text
    • https://cdn.sqhk.co/peluxisomex/qoibjjj/88504210794.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459621/normal_5fbcc2fde5c8f.pdfIn PDF document text
    • https://cdn.sqhk.co/xolizoxime/YieM7jg/gunavizazuxivowuliro.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444096/normal_5fa7a1938fa98.pdfIn PDF document text
    • https://cdn.sqhk.co/gemadaruvow/oBjbTjf/menujilarowapufofibamomuj.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/43fbb7f6-db6c-468e-9595-09957bef3078/amc12a_2020_problems.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c6878df9-1ab9-43a9-958e-ac81d6637746/xoxuxebi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ca545bec-9eb8-4b27-a271-8f40c3f941db/dozazofipotiki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ed5093cd-714b-417a-ad4a-0020bbd7a0c2/maksimum_g_teoremi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/55f82c5b-b892-4bf2-a7c9-55673eee3e44/letter_word_identification_wj_iv.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_off0000e2c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2C0 5484 bytes
SHA-256: 90eb2366acc60cee5abc4d796f85c41239ed86a4bf0ef96d6026e8a6f72e4bd6
font_01_sfnt_off0000f58a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF58A 10732 bytes
SHA-256: 1ad373461871935c3c14597247a2edb4ba474967e3932bd4a00c093c57086ff8

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