Malicious PDF — malware analysis report

Static analysis result for SHA-256 5207f1101e56e154…

MALICIOUS

PDF

73.6 KB Created: 2021-06-13 16:55:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 226556a7038116bd1edffa1d6f60dd91 SHA-1: 40e280e98cb6013774acf48fa2ade42d31d0e0c8 SHA-256: 5207f1101e56e15490ee8dfc9948413c313e74381c5306927fad5991ca53ffc5
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a large number of external links, identified as a link farm, with one prominent URL pointing to a suspicious domain. ClamAV and ML classifiers also flagged this file as malicious, specifically as a phishing trojan. The embedded content appears to be obfuscated or corrupted, preventing detailed analysis of any potential scripts.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://crysiq.ru/pbw?utm_term=liferay+developer+guide PDF link annotation
    • https://rebodegumirimak.weebly.com/uploads/1/3/0/7/130775130/9260527.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403410/normal_60026e8f98614.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416128/normal_5ff9d00323469.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378149/normal_60027ec033e20.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477386/normal_600f5a57f0407.pdfIn PDF document text
    • https://neremepapo.weebly.com/uploads/1/3/4/6/134653798/64ef60ece0.pdfIn PDF document text
    • https://vakalebixop.weebly.com/uploads/1/3/5/3/135339933/361238.pdfIn PDF document text
    • https://fujazilumekopel.weebly.com/uploads/1/3/2/6/132681311/8710eee650.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486534/normal_5fee10ef2c33e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456389/normal_6038d61e2b7b0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403543/normal_6006bc43a521e.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/f6d616b7-ee4b-41b5-808c-7a08adc5713f/what_happened_to_brunos_father_at_the_end.pdfIn PDF document text
    • http://jojekepodef.pbworks.com/w/file/fetch/145098609/31222207517.pdfIn PDF document text
    • http://zofurutatag.pbworks.com/w/file/fetch/145140909/vetetidaxuvupi.pdfIn PDF document text
    • http://kejufavo.pbworks.com/f/andrew_loomis_anatomy.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/15ddc1cd-2910-4d81-a275-87ab59bf9278/rational_male_religion.pdfIn PDF document text
    • http://gudikijuruf.pbworks.com/f/26566929416.pdfIn PDF document text
    • http://lawerusemepe.pbworks.com/f/my_stupid_boss_2_malay_subtitle_download.pdfIn PDF document text
    • http://puxivir.pbworks.com/f/how_to_save_pages_on_photoshop.pdfIn PDF document text
    • http://metudebebi.pbworks.com/f/satukizunoxijumesafel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5b10a8ed-7d41-4d68-8a4e-73a6160d689e/swiffer_wetjet_mopping_kit_instructions.pdfIn PDF document text
    • http://xozojonurom.pbworks.com/w/file/fetch/144555891/34878114902.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_off0000e3ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3EA 5132 bytes
SHA-256: 00f0ec72d5bc3f3d02ce28e8a2d5275ff462f3aa64d5f4e18b156899bc612128
font_01_sfnt_off0000f58e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF58E 10520 bytes
SHA-256: 27fbeb3e2f40621cb5af615d0a75182dc4233f759d034771209661cded1215bc

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