Malicious PDF — malware analysis report

Static analysis result for SHA-256 10126d137f93d2a8…

MALICIOUS

PDF

73.1 KB Created: 2021-03-25 01:25:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: d01a78c2e9bafd09c227db4fa168f52d SHA-1: 9aee4c0982893efec199563626e08175f2eba2eb SHA-256: 10126d137f93d2a811fc356d6ba817a2da3e1e06726858a4f68930d4fdf30773
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-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://jottigo.ru/award?keyword=tony+robbins+unlimited+power+pdf+download PDF link annotation
    • http://gooddevice-online.com/who_invented_citizens_band_radioqw0yt.pdfIn PDF document text
    • https://wazelekur.weebly.com/uploads/1/3/4/3/134322050/fuleref-zotewumakor-lobulob-vowigukakimesof.pdfIn PDF document text
    • http://thehensleys.org/25292159167y5znf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459469/normal_602c4b7513814.pdfIn PDF document text
    • http://phillipen.online/709047832769ag4h.pdfIn PDF document text
    • http://lg-copyrightforms.com/95773635308mwb80.pdfIn PDF document text
    • http://biotringel.shop/how_to_configure_my_passport_ultra_for_macl7ucb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384652/normal_600e5c5eed873.pdfIn PDF document text
    • http://otomail.business/brain_teasers_for_adults_with_answers_mathda3yc.pdfIn PDF document text
    • https://gajatizu.weebly.com/uploads/1/3/5/3/135315297/jinixupor-xidofibir-wukobefenuz.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/wizitifowubux/10236872885.pdfIn PDF document text
    • https://s3.amazonaws.com/luropi/wuzivojonukigegaxel.pdfIn PDF document text
    • https://s3.amazonaws.com/kezemiradigu/wisuwakijirunuke.pdfIn PDF document text
    • https://s3.amazonaws.com/wanalovum/35193921943.pdfIn PDF document text
    • https://s3.amazonaws.com/xebuvuwov/aadhar_card_correction_form_submission_address.pdfIn PDF document text
    • https://s3.amazonaws.com/dukajevo/88503420669.pdfIn PDF document text
    • https://s3.amazonaws.com/wujixus/nojapixerilazibugid.pdfIn PDF document text
    • https://s3.amazonaws.com/wovugi/charmed_1998_free.pdfIn PDF document text
    • https://s3.amazonaws.com/najubu/34653012100.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_off0000df8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF8E 5468 bytes
SHA-256: f6eb2f5eb236f6ce030f6786909876e4152c62f949e693b240849d07117b9e4d
font_01_sfnt_off0000f21b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF21B 10784 bytes
SHA-256: 055367f2f6daf4c95c5c9e10ccf240fdb22937c185d958bc4dd348c157406de6

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