Malicious PDF — malware analysis report

Static analysis result for SHA-256 bacb5e1799c0b47e…

MALICIOUS

PDF

73.5 KB Created: 2021-03-04 17:42:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a9d6782f17b072000debf0035496b03e SHA-1: 2439f969ac99f25be3349bfe60f0e6f58cdc1963 SHA-256: bacb5e1799c0b47ef9eb67c3448b2d5857fc625fb4bd124ae52e865c67d4329d
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'resalured.ru', which is likely part of a phishing campaign. While no scripts were explicitly extracted, the presence of external URIs and the nature of the detection suggest an attempt to redirect the user to a malicious site, potentially for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://resalured.ru/123?utm_term=how+to+make+a+simple+hooded+cloak
    • http://sikirizev.22web.org/lab_equipment_practice_worksheet.pdf
    • http://vawagizipul.iblogger.org/manual_of_the_planes_3.5.pdf
    • http://xunusemek.22web.org/o_que_significa_assinatura_do_proponente.pdf
    • https://cdn-cms.f-static.net/uploads/4367950/normal_602aa706e676d.pdf
    • https://cdn.sqhk.co/kukisigafumi/iidjjm4/3_point_shooters_2020.pdf
    • https://cdn.sqhk.co/sebetite/ijdPMjd/wrestling_revolution_3d_mod_apk_ios.pdf
    • https://cdn.sqhk.co/nilimijano/WgdQRij/mejijukiw.pdf
    • https://static.s123-cdn-static.com/uploads/4483610/normal_5fc7241cda827.pdf
    • http://lukegerit.22web.org/ayyappan_new_songs_tamil_starmusiq.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://780c8f77-0f51-49ab-8dd1-60a90eb210a4.filesusr.com/ugd/1b8612_3d600c9cef28484a90698a69f1a6836e.pdf?index=true
    • https://s3.amazonaws.com/wibadinavosunom/xudumewupira.pdf
    • https://s3.amazonaws.com/kagedatabujo/21943863167.pdf
    • https://43cb2d18-1589-43a7-b1c5-fe1278e1c76d.filesusr.com/ugd/370b54_10890f58a463448aaf32e153760febf0.pdf?index=true
    • https://e8677ced-6330-435e-8237-200fb10408a4.filesusr.com/ugd/a4c1fa_0dfa81c703824aecacfdf1505c67b19e.pdf?index=true
    • https://s3.amazonaws.com/jokotaziweluge/lexical_cohesion_in_discourse_analysis.pdf
    • http://pidosowot.epizy.com/fezav.pdf
    • http://kewonor.epizy.com/personal_budget_forms_free.pdf
    • https://5ee0d2ad-6486-47ce-ab7d-0e7b2bae4193.filesusr.com/ugd/bc0d1e_806c0cf398714c88bfe0ecd7db0d1ed3.pdf?index=true
    • http://dugipiwem.epizy.com/how_to_setup_a_harmony_650_remote.pdf
    • https://ec08fec6-e576-400d-8504-372613838d3c.filesusr.com/ugd/57e0ce_3c9378d5d7d14d8dbc4b4caa07bc5ea6.pdf?index=true
    • https://s3.amazonaws.com/zepifudoxapo/biodata_format_for_marriage_for_girl_muslim.pdf
    • http://kibiviridox.epizy.com/rajutefoxozap.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e2ec.bin
a7a946e53bd77b6ddeb0f67311571b14ae4fa84f0ab3fc00baacd7208adab64c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE2EC 5336 bytes
font_01_sfnt_off0000f4f6.bin
68c0170c71a65bf226870bbf0605b3cc42a4b1591fe6ec2a42a0f80bb6382fae		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF4F6 10376 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.