Malicious PDF — malware analysis report

Static analysis result for SHA-256 9074ed3d6ad8ac42…

MALICIOUS

PDF

75.3 KB Created: 2021-03-05 14:05:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 8cd0472f3692dc0a09963cf9deadfcb0 SHA-1: b1ff1fcdb55fdfdbfc4adbf5f748aca82b3b80c3 SHA-256: 9074ed3d6ad8ac4295e69e117dfc80f81aae70ec22f0bbd7855b81a216010a38
156 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 embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://kuzutuzo.ru/123?utm_term=malibu+lighting+transformer+parts PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/mozirolinitaje/oxford_accounting_dictionary.pdfIn PDF document text
    • https://b998fa74-583e-446a-a2a7-67f41460fdb2.filesusr.com/ugd/e081f8_531ebed806e04dd88d3c958380359417.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/pezofut/what_size_batteries_does_the_big_buddy_heater_take.pdfIn PDF document text
    • https://s3.amazonaws.com/jebokizez/10252554414.pdfIn PDF document text
    • https://s3.amazonaws.com/woxewiwupir/69708515188.pdfIn PDF document text
    • https://s3.amazonaws.com/podawakumepewez/notebuwetipafop.pdfIn PDF document text
    • https://s3.amazonaws.com/fumiposamisur/teruwovodiwifamu.pdfIn PDF document text
    • http://wuwokumafinu.epizy.com/chicco_keyfit_stroller_tray.pdfIn PDF document text
    • https://s3.amazonaws.com/dudujopixejikug/zotamumemerifejurenedok.pdfIn PDF document text
    • https://15319a82-8c66-4906-b3c2-464277991f2b.filesusr.com/ugd/070acf_d72bdf655fd2403db5d8f75c3051ebb9.pdf?index=trueIn PDF document text
    • http://lituvatitibew.epizy.com/90287877590.pdfIn PDF document text
    • https://s3.amazonaws.com/feseni/59218293930.pdfIn PDF document text
    • https://s3.amazonaws.com/povelenavuviw/bewagaforefejodilolep.pdfIn PDF document text
    • http://fipomazuwasa.epizy.com/wogemonetefunojifoluxube.pdfIn PDF document text
    • https://s3.amazonaws.com/pasawexawinogad/xorujiw.pdfIn PDF document text
    • https://s3.amazonaws.com/moduxanakuri/sevimimirameluzen.pdfIn PDF document text
    • https://s3.amazonaws.com/davawina/dataflow_verification_report_qatar.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d997.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD997 5340 bytes
SHA-256: 016b38fb8b13dcec74870c63c8494669b71c2bde0feeb18f1522817253ebba25
font_01_sfnt_off0000eb8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB8F 11468 bytes
SHA-256: 17adeb24356d74fb00f0abfd7a806244e5574aabc480492a7107ccf1a02a8914
font_02_sfnt_off00011239.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11239 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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