Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6051ad8dd7b53db…

MALICIOUS

PDF

75.8 KB Created: 2021-04-08 08:14:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0b292561bc800c76d3486357a7864ccf SHA-1: 91742f5a58849a202cace85cbd1e658385fe18db SHA-256: b6051ad8dd7b53db4667c554715f864d407df17dede764d20cf3ffee61a14409
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a phishing attempt. It contains an external URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. The document body is heavily obfuscated, but the presence of embedded URLs and the overall detection suggest it's designed to trick users into visiting a compromised resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://lozipotod.ru/123?utm_term=jotun+fenomastic+enamel+matt+technical+data+sheet
    • https://cdn.sqhk.co/vinasujitupe/pa0hdiX/skater_boy_aesthetic_girl.pdf
    • http://xewitanajudozu.iblogger.org/discrete_mathematical_structures_6th_edition_answers.pdf
    • https://static.s123-cdn-static.com/uploads/4407552/normal_5feb1aad41caf.pdf
    • https://cdn-cms.f-static.net/uploads/4450734/normal_60161d0cee896.pdf
    • https://static.s123-cdn-static.com/uploads/4421049/normal_5fe068967f3e2.pdf
    • https://vonefemupeme.weebly.com/uploads/1/3/5/9/135957005/pusanut_funerobogej.pdf
    • https://faporipito.weebly.com/uploads/1/3/4/6/134600592/todunufes.pdf
    • https://bonawuxuje.weebly.com/uploads/1/3/0/7/130776103/73f87cb.pdf
    • https://cdn.sqhk.co/furugilenu/ibiiaOY/92383829107.pdf
    • https://static.s123-cdn-static.com/uploads/4459025/normal_60021542e2fc6.pdf
    • https://cdn.sqhk.co/wazafanez/bMhfiiV/41428668529.pdf
    • https://static.s123-cdn-static.com/uploads/4483104/normal_5fcd27881aac3.pdf
    • https://kolekidir.weebly.com/uploads/1/3/4/4/134441437/4386614.pdf
    • https://gowobokibisalo.weebly.com/uploads/1/3/0/9/130969305/4738731.pdf
    • http://sisedema.22web.org/29935022832.pdf
    • https://cdn.sqhk.co/rubutemoxe/jibgcjj/buzaxesifagesepatiwudax.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/0baf0583-e29a-441d-99cc-1c84bd74dbdf/javonusewe.pdf
    • http://fusufovonezep.rf.gd/sc_st_prevention_of_atrocities_act_1995.pdf
    • https://uploads.strikinglycdn.com/files/58f0daff-d081-4a87-9ed5-c49db7c9312a/6534379237.pdf
    • https://uploads.strikinglycdn.com/files/6796962f-6a46-49b2-9205-eb8da4074c00/what_factors_influence_genetic_diversity.pdf
    • https://uploads.strikinglycdn.com/files/197097a2-c9f5-44db-9384-85a972723f6e/3376931771.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_off0000ddce.bin
1890be855bb759b281d6160f27ffd0d903949a015a9caac3fcaad38625c13394		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDDCE 5036 bytes
font_01_sfnt_off0000eec7.bin
1612eb916350bfef4f563b462982bbfc40bb8dc5c92ff7f6b1773060c9c9822a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEEC7 10512 bytes
font_02_sfnt_off000112b9.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x112B9 4324 bytes

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