Malicious PDF — malware analysis report

Static analysis result for SHA-256 7225a1a297d94563…

MALICIOUS

PDF

164.4 KB Created: 2021-02-27 04:03:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 53fc66afdfc18daee74a3feb8151a531 SHA-1: 2198b1448a0c4eade90c320bf274de230f073a28 SHA-256: 7225a1a297d945631df4ca59976a06faf830589bb5f3f73797fcadfc3f1ec88a
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains an embedded URL that redirects to a phishing-like page. The document body, though heavily obfuscated, appears to be related to the URL's keyword, suggesting a social engineering lure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to trick users into visiting the external site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9672

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://mezovuduw.ru/award?keyword=what+are+the+5+pillars+of+buddhism PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4454977/normal_5fe41b887e427.pdfIn PDF document text
    • http://tawojerikopopud.iblogger.org/ben_10_games_free_apk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389095/normal_600783010b4e2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408004/normal_5fe6298818110.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454043/normal_602b82f730c02.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454681/normal_5ffbc64453cfb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4472198/normal_5fe190f90f15f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://s3.amazonaws.com/nigimul/11238676921.pdfIn PDF document text
    • https://s3.amazonaws.com/xijuxosisomuna/83195831336.pdfIn PDF document text
    • http://lebozid.epizy.com/68549860427.pdfIn PDF document text
    • https://s3.amazonaws.com/rovuweraja/bionic_commando_java_game.pdfIn PDF document text
    • http://simalivalobo.rf.gd/distance_formula_worksheet_bower_power_answer_key.pdfIn PDF document text
    • http://vobogiv.rf.gd/what_is_a_good_sat_score_to_get_into_harvard.pdfIn PDF document text
    • https://s3.amazonaws.com/jukoxisojow/86964585865.pdfIn PDF document text
    • https://s3.amazonaws.com/dedinavesute/jekak.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
    • http://www.gnu.org/licenses/lgpl.htmlRegularDanhHongIn PDF document text
    • http://www.geocities.com/dnhhngIn PDF document text
    • http://sinhala.sourceforge.net/In PDF document text
    • http://sinhala.cvs.sourceforge.net/viewvc/*checkout*/sinhala/sinhala/fonts/CREDITSIn PDF document text
    • http://www.gnu.org/licenses/gpl-2.0.htmlIn PDF document text
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text
    • http://scripts.sil.orgIn PDF document text

Extracted artifacts 8

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001c84d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C84D 8056 bytes
SHA-256: 09a5937712aeffa435326fb4b3efea9e2251b4202c3ffd04b00b58164b7a46da
font_01_sfnt_off0001e34b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1E34B 5556 bytes
SHA-256: 34c0720e42c38878771b842558a0f4aa38e547b74ad27bcf0cd16b283dd984f9
font_02_sfnt_off0001f607.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1F607 6308 bytes
SHA-256: 81ee1219e601c8d5568cdb371481de7aba3c08c4bb5c00a2a0517ff64ab3c0b0
font_03_sfnt_off00020897.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x20897 4400 bytes
SHA-256: f8e2f48776ccc9dcc36a01ff6f6843f7d7447f7011daeff313d5a39aef771777
font_04_sfnt_off0002182e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2182E 7132 bytes
SHA-256: 20605ea62434de2af3a888b8d48f299500f3e70c04f5d4416e4c9319cd18c5aa
font_05_sfnt_off00022b6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x22B6B 18512 bytes
SHA-256: e74f0d0e2804861a4406c07f239b18933d1bd92a9f59a629e1c32ccd9b560776
font_06_sfnt_off000261ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x261AE 3504 bytes
SHA-256: 93198411f672cd137ec0112abdf0b95e4305d2ee6084a02f7b2ba48853f3409d
font_07_sfnt_off00026f63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x26F63 5856 bytes
SHA-256: 44c1d34c3873657735995b4dac3084c953fc50aa6297cc63711e290b78a98e54

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