Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fd5e6cd8652271e…

MALICIOUS

PDF

83.6 KB Created: 2021-03-16 18:28:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 8eb68de1579392195b2017b09df8197c SHA-1: 2e77c1a78dc87a00b5af21ce0d5598e171cdc95f SHA-256: 8fd5e6cd8652271ed004db1927dcb82eb6fbda95a9eba7ebce64e263d7bb5784
154 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9954

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://yafferge.ru/123?utm_term=second+hand+rubber+sheet+roller In PDF document text
    • http://jusekod.iblogger.org/75909068792.pdfIn PDF document text
    • http://porizaritofo.mypressonline.com/fujojodalalujuriluzexija.pdfIn PDF document text
    • http://kejurudoji.medianewsonline.com/6098682417.pdfIn PDF document text
    • http://luloxijemise.medianewsonline.com/tabela_aliquota_icms_interestadual_2020.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/busutafitufe/venice_louisiana_weather_report.pdfIn PDF document text
    • https://s3.amazonaws.com/gonima/arduino_ide_linux_install_terminal.pdfIn PDF document text
    • https://s3.amazonaws.com/temujonuwu/psycho_robert_bloch_read_online.pdfIn PDF document text
    • http://nadefivetokilak.rf.gd/40885092937.pdfIn PDF document text
    • https://s3.amazonaws.com/bokelur/68029870979.pdfIn PDF document text
    • http://sivikonalijuto.myartsonline.com/cyberpunk_2077_get_delayed_again.pdfIn PDF document text
    • https://s3.amazonaws.com/kukupunopedon/64242972695.pdfIn PDF document text
    • https://s3.amazonaws.com/bewibiwat/kazakhstan_news_reporter_meme.pdfIn PDF document text
    • https://s3.amazonaws.com/mulerux/suxokopu.pdfIn PDF document text
    • http://dovunufesesiz.onlinewebshop.net/awk_command_unix_examples.pdfIn PDF document text
    • https://s3.amazonaws.com/gezetega/nightcore_heartbeat_song_320kbps.pdfIn PDF document text
    • http://jisukizopupez.rf.gd/mugogaju.pdfIn PDF document text
    • https://s3.amazonaws.com/donukadizolin/bubble_bobble_my_boy.pdfIn PDF document text
    • https://s3.amazonaws.com/pasawe/alejandro_jodorowsky_yo_el_tarot.pdfIn PDF document text
    • https://s3.amazonaws.com/zabejuvijolu/wesuli.pdfIn PDF document text
    • https://s3.amazonaws.com/wexukufedepim/khiladi_bhaiyya_786_video.pdfIn PDF document text
    • https://s3.amazonaws.com/wajibile/36540814368.pdfIn PDF document text
    • https://s3.amazonaws.com/gumagabu/mapidobokute.pdfIn PDF document text
    • https://s3.amazonaws.com/vavebufevodutob/xepoxiwuzasunapi.pdfIn PDF document text
    • https://s3.amazonaws.com/pajeriramal/bukipif.pdfIn PDF document text
    • https://s3.amazonaws.com/zijivevip/sorcerer_pve_solo_build_eso.pdfIn PDF document text
    • https://s3.amazonaws.com/tubukeganuji/courtesy_expressions_worksheet.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f495.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF495 5272 bytes
SHA-256: e78084917c31adcb05ac5cade78f3c1134df432af7780cc22c29592f47bc5a97
font_01_sfnt_off00010671.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10671 10748 bytes
SHA-256: 16a43741080fe27ed48a4cf35cbed0018a515845555a8d842c0fa82d0aa4882a
font_02_sfnt_off00012b41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B41 16164 bytes
SHA-256: e296a61d2d303e35be9e1a35631556663d2780498efa7e8f3867bf557f172fe6

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