Malicious PDF — malware analysis report

Static analysis result for SHA-256 30c5f022e11fad99…

MALICIOUS

PDF

79.3 KB Created: 2021-03-28 02:03:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d1507253213b7e2dc128595e7ee6c169 SHA-1: 5706d5cb29c4cdc573eff1e832f64b38474accf5 SHA-256: 30c5f022e11fad99f93d86880f47b30ada3a64b202fe6c50a81054e74a9a5432
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 or trojan variant. It contains an embedded URI pointing to 'resalured.ru', which is likely the primary distribution point for a malicious payload or phishing page. The document body, though heavily obfuscated, suggests a lure related to a textbook, aligning with common social engineering tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/wix?keyword=expresate+3+textbook
    • http://vivekawiga.sportsontheweb.net/schlage_keypad_deadbolt_blinking_red.pdf
    • http://zdsshop.top/2002_ford_focus_rear_brakes_diagram0396g.pdf
    • http://setlyb.online/neurosis_que_esj1aot.pdf
    • http://bitsracing.net/how_to_find_negative_z_scores0z5oz.pdf
    • https://wugoxuvalego.weebly.com/uploads/1/3/4/0/134017666/mufubavepi.pdf
    • https://kulexixujida.weebly.com/uploads/1/3/4/7/134723957/a7c4b16c4764a.pdf
    • https://cdn.sqhk.co/mogizilo/JUXeDhh/shops_near_lighthouse_cafe_sanibel.pdf
    • https://luzulobopado.weebly.com/uploads/1/3/2/6/132681737/fenitozitit-vinag.pdf
    • http://spencermcman.us/45140459843q6ho1.pdf
    • http://xrootunited.com/kuzikaf07sx.pdf
    • https://bifetidenogu.weebly.com/uploads/1/3/1/3/131379340/rovaraminakan.pdf
    • http://shtangye.xyz/28100604498ym1pv.pdf
    • http://beremoter.online/44363106220aik5c.pdf
    • https://cdn.sqhk.co/mumeriretepi/RCmlYid/aplikasi_android_nonton_film_gratis_sub_indo.pdf
    • https://cdn.sqhk.co/wazuvegox/ihgcEN7/wasewiw.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/likadojivivofu/zaduxukesezunesufeforope.pdf
    • http://dipagepe.atwebpages.com/tac_geometric_design_guide_for_canadian_roads.pdf
    • http://vobozezojip.onlinewebshop.net/dezinoserapowebezaz.pdf
    • https://s3.amazonaws.com/ganubatebedoxez/english_grammar_worksheets_with_answers_for_high_school.pdf
    • https://s3.amazonaws.com/mogedozara/install_apk_as_system_app_adb.pdf
    • https://s3.amazonaws.com/magapeguwabe/54310026138.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_off0000f481.bin
81519561394033dc7c9b89da71bd4ce8ada37c230f333bf69bf6666eb3522ec4
pdf-font-stream PDF embedded font (sfnt) at offset 0xF481 5176 bytes
font_01_sfnt_off0001062b.bin
ec04939801ab7699ff4d56c04df83ef0032fc6843021854eb9ab93d4fa344c57
pdf-font-stream PDF embedded font (sfnt) at offset 0x1062B 12212 bytes