Malicious PDF — malware analysis report

Static analysis result for SHA-256 01817d3c203d2576…

MALICIOUS

PDF

68.4 KB Created: 2020-12-26 17:23:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: df4e31ece26d123d3061fd509626804c SHA-1: 9307b7ccc3953a2b0dee6f8ef3f2ead868727649 SHA-256: 01817d3c203d25764d89c21f256acf7e6dbe6f46ec40deb35b298b4941907997
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://traffking.ru/aws?utm_term=agama+agama+manusia+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4383805/normal_5f962c0cf337d.pdfIn PDF document text
    • https://cdn.sqhk.co/wepaxuwelusu/jd0gjhi/movie_maker_app_free_download_for_windows_7.pdfIn PDF document text
    • https://dedezeke.weebly.com/uploads/1/3/4/4/134494225/3938627.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413238/normal_5f97d1794cf65.pdfIn PDF document text
    • https://cdn.sqhk.co/zenetofuma/gghfhaU/ultimate_epic_battle_simulator_2_mod_apk.pdfIn PDF document text
    • https://sexomimafu.weebly.com/uploads/1/3/4/3/134311134/nijonum_najikijefosu_xedukod.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/lejivugeleguwod/homebase_polythene_dust_sheets.pdfIn PDF document text
    • https://s3.amazonaws.com/fejififimaketo/aplia_homework_answers_statistics.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/around_the_world_in_60_seconds_book.pdfIn PDF document text
    • https://s3.amazonaws.com/kovozenamofox/gantt_chart_template_for_powerpoint.pdfIn PDF document text
    • https://s3.amazonaws.com/juvosi/38578852106.pdfIn PDF document text
    • https://s3.amazonaws.com/kuboki/virafuwalosuxuv.pdfIn PDF document text
    • https://s3.amazonaws.com/vojapu/jafokolurilow.pdfIn PDF document text
    • https://s3.amazonaws.com/pipaneku/terry_eagleton_marxism_and_literary_criticism.pdfIn PDF document text
    • https://s3.amazonaws.com/puretulenuza/crowley_thoth_tarot_deck.pdfIn PDF document text
    • https://s3.amazonaws.com/baxunaf/coco_google_docs.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cf0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF0F 5220 bytes
SHA-256: 9c1e684e7f44ba48be7ad9a3a0dc061702c5bacb0aa57a50f0ad197ba2047f8b
font_01_sfnt_off0000e0cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0CC 10684 bytes
SHA-256: 9e4de54501d2afbf4bf1dc7863501b0024c6f3169335a1ed96afa0f5d751f5b9

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