Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d785f9dcaa8cf34…

MALICIOUS

PDF

73.1 KB Created: 2021-03-01 02:56:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 2df82f100d05bc0145dd8d5f1c1d09b1 SHA-1: 20334f329531481972451ab8550d527c82a84d0a SHA-256: 7d785f9dcaa8cf34fc966f9a1bdcfff4cbad6ca59a41d02c08da54f093656917
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 high likelihood of malicious intent. The embedded URI points to a suspicious domain, likely serving a phishing or malware payload. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to malicious content, potentially exploiting PDF vulnerabilities.

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://nipisod.ru/award?keyword=us+stock+market+news+now PDF link annotation
    • https://cdn.sqhk.co/zaniridut/e9ihCXs/2741406196.pdfIn PDF document text
    • https://cdn.sqhk.co/detazido/TFihVNy/uri_movie_online_prime_video.pdfIn PDF document text
    • http://lomigakorak.getenjoyment.net/52839965278.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408858/normal_60396dbd9f81a.pdfIn PDF document text
    • https://cdn.sqhk.co/lesasafo/gtmsuEJ/the_shadow_sun_mod_apk_rexdl.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381752/normal_6035b3465b683.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405660/normal_5ffd2dd21c3c3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475216/normal_5ffaa711e60d1.pdfIn PDF document text
    • https://cdn.sqhk.co/xagaxubibiz/dhghhib/77538740088.pdfIn PDF document text
    • https://cdn.sqhk.co/sinemajud/gidQsM9/56892621116.pdfIn PDF document text
    • https://cdn.sqhk.co/guxuboru/L3MoieC/vikuvok.pdfIn PDF document text
    • http://lazirawolewok.getenjoyment.net/tuwifobiruzisofunisuvowu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4461205/normal_5ff54b33e3770.pdfIn PDF document text
    • https://cdn.sqhk.co/pozusonitid/jjgidr1/tower_defense_simulator_codes_not_expired.pdfIn PDF document text
    • http://paselon.getenjoyment.net/jevutuk.pdfIn PDF document text
    • https://cdn.sqhk.co/mofijovelu/iiahaje/58331872326.pdfIn PDF document text
    • https://cdn.sqhk.co/nujekezitifi/jahf5jc/bus_simulator_ultimate_pc_ye_nas_l_indirilir.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403688/normal_60268306a5638.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000e510.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE510 5060 bytes
SHA-256: 76fa69f154efdde6f93f1ea70ffaabe1568c85667a595b5f4e6ca400514a41cf
font_01_sfnt_off0000f647.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF647 9736 bytes
SHA-256: 66ccf3fbffe1dbf3430dbb66d722794371fd3eed0582a1676104b4401b585270

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