Malicious PDF — malware analysis report

Static analysis result for SHA-256 1026c9825967f29d…

MALICIOUS

PDF

134.5 KB Created: 2021-03-04 01:58:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 574ca9531ff7a893b053f7933af46f18 SHA-1: f67d6bf207507c686dc3babef5f1bccbbfca421f SHA-256: 1026c9825967f29d2bb6a58acb3ac4feffaa2bd642d320d12f05d6823104a8e6
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 high likelihood of malicious intent. The presence of an external URI pointing to 'fokemale.ru' suggests the document is designed to redirect users to a potentially harmful site. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9984

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://fokemale.ru/123?utm_term=msi+z97s+sli+krait+edition+clear+cmos PDF link annotation
    • http://bigwin-1xbet.fun/flappy_crush_apktoob9.pdfIn PDF document text
    • https://cdn.sqhk.co/foxoxaze/ifnlTig/online_bow_hunting_games.pdfIn PDF document text
    • http://thelandofbadideas.com/criminal_lawyer_brampton_free_consultationt2ykh.pdfIn PDF document text
    • http://vexasefagi.scienceontheweb.net/conversin_pulgadas_a_cm_tv.pdfIn PDF document text
    • http://nudistoff.club/352151281832wa2b.pdfIn PDF document text
    • http://polfact.site/solubivafovogumopazilefas6qk.pdfIn PDF document text
    • http://xawinewilapirog.iblogger.org/boxuluxeb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.thdl.org/http://www.thdl.org/TibetanIn PDF document text
    • http://voxosejak.rf.gd/gogifi.pdfIn PDF document text
    • https://s3.amazonaws.com/gonasidupij/what_was_happening_in_america_in_1787.pdfIn PDF document text
    • http://penanaras.myartsonline.com/how_to_check_transmission_fluid_honda_civic_hybrid.pdfIn PDF document text
    • https://s3.amazonaws.com/ginutu/53229115705.pdfIn PDF document text
    • https://s3.amazonaws.com/zufojadibi/bozuvitolobom.pdfIn PDF document text
    • http://puwovejivu.rf.gd/music_artist_profile_format.pdfIn PDF document text
    • https://s3.amazonaws.com/sajatesawodiji/borland_c_builder_6._0_enterprise_free.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwenoxuzasila/84675279758.pdfIn PDF document text
    • http://xusapibu.onlinewebshop.net/how_to_pronounce_pali_canon.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/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlTibetanIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001715c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1715C 16212 bytes
SHA-256: 286a6f338ab25f9f44a1147c7b4d1a6b18285ff0f1252ac9b9334e2abaef2017
font_01_sfnt_off0001a622.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A622 5440 bytes
SHA-256: 0b2bdcee6ceb662ddcb501d0d39ca9047c26df175c2ca1218596a37e54f6fa16
font_02_sfnt_off0001b8a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B8A6 8872 bytes
SHA-256: e8b613070e977d9de94bf48f229d2b120c530ab7339f5df919daef063e5a0862
font_03_sfnt_off0001ca2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1CA2C 13484 bytes
SHA-256: 624979b9cae2824deed601f630ed8023a567da39d5e6ac7652936ab7bde24b01
font_04_sfnt_off0001f542.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1F542 16200 bytes
SHA-256: 7701dd1a46a90e1d2a23aaa9f9e782f6a5f27b0ca0aafaa27224684fe2e599fc

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