Malicious PDF — malware analysis report

Static analysis result for SHA-256 9def862f6f63cafa…

MALICIOUS

PDF

79.7 KB Created: 2021-04-30 23:53:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: b8731d557970540a1ad86ac59950d9cf SHA-1: e7c31b19a89b8ae067bf10a9e61c758da7682e13 SHA-256: 9def862f6f63cafa05133cef09eb9a0fced32a10161dbc0ba7e7c662baaad48b
156 Risk Score
Tags
free-cdn-ebook-manual-lure

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-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://jottigo.ru/strik?utm_term=general+psychology+a+textbook+for+college+students PDF link annotation
    • http://tedewirivotu.iblogger.org/greeting_card_design_template_vector.pdfIn PDF document text
    • https://cdn.sqhk.co/kogujipubap/hjBjb0L/gebeguwibive.pdfIn PDF document text
    • https://cdn.sqhk.co/libuzewis/hPjd2hg/mx_player_apk_download_for_iphone.pdfIn PDF document text
    • http://sotinifox.22web.org/57037814388.pdfIn PDF document text
    • https://cdn.sqhk.co/busudijul/q3phdpP/coreldraw_16_free_trial.pdfIn PDF document text
    • https://vubumixot.weebly.com/uploads/1/3/4/7/134751696/a2bbdb.pdfIn PDF document text
    • https://lepamume.weebly.com/uploads/1/3/4/8/134882258/xevif.pdfIn PDF document text
    • https://cdn.sqhk.co/jebavimot/Ogdia4W/santorini_restaurant_berryville_va.pdfIn PDF document text
    • https://gimogelego.weebly.com/uploads/1/3/4/6/134601730/bdf6c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/40458094-2df2-4499-a885-294702ffb787/7135166588.pdfIn PDF document text
    • http://nojavunol.epizy.com/2886295711.pdfIn PDF document text
    • http://ketaxijos.rf.gd/avon_catalogue_june_2020_download.pdfIn PDF document text
    • https://s3.amazonaws.com/lorifawuvawot/gaxutegufobifuxor.pdfIn PDF document text
    • https://s3.amazonaws.com/forupokisip/mipisezofetevi.pdfIn PDF document text
    • https://s3.amazonaws.com/ravuxudibure/gadenivoxij.pdfIn PDF document text
    • https://s3.amazonaws.com/gorajikunobixi/vavurasagobigolazaxopiju.pdfIn PDF document text
    • https://s3.amazonaws.com/jinotugiwomo/cannon_safes_customer_support.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fbaa4fed-f9e0-4ff4-874a-1503f9bd2573/ejemplo_de_dialogo_en_ingles_de_dos_personas.pdfIn PDF document text
    • https://s3.amazonaws.com/pazerogasarinu/zarinowowixofujisupa.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f547.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF547 5824 bytes
SHA-256: 8bc80b5f98abec35f8c41794739f2a6b284ad93eb41c36e1348f4220546abed3
font_01_sfnt_off0001091b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1091B 11172 bytes
SHA-256: 17ef6a0e86b927859df6b077b65248ed131a9ab183b1469dbb2e3ded07e452f9

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