Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e23038795650005…

MALICIOUS

PDF

75.8 KB Created: 2021-03-17 16:01:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: efc9664e6accc17463c564f2bbe46aa5 SHA-1: 9594133ad5463cad8c9232fc0e0de9a476cd180f SHA-256: 0e23038795650005c53d4f481071449d316a342c14ef4fec1dac16c6f09622b2
166 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. It uses a password-protected-archive lure. 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 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://dugedepap.ru/123?utm_term=cade+simu+3.+0++gratis+portugues PDF link annotation
    • https://cdn.sqhk.co/zepipawetopi/jcghheO/viwotepelesudasimafulem.pdfIn PDF document text
    • https://wexigovepabenu.weebly.com/uploads/1/3/0/7/130738565/4728351.pdfIn PDF document text
    • https://xoxajunun.weebly.com/uploads/1/3/4/3/134351876/1880105.pdfIn PDF document text
    • http://sunshop.pro/best_talking_caller_id_app_for_androidl59d4.pdfIn PDF document text
    • http://j3vnci4.xyz/dental_assistant_jobs_in_canadaqorve.pdfIn PDF document text
    • https://tuwavufubuxa.weebly.com/uploads/1/3/3/9/133997694/3779836.pdfIn PDF document text
    • https://cdn.sqhk.co/rodesedaded/AFK61jf/46747506868.pdfIn PDF document text
    • http://winoraama.space/98651932139prln9.pdfIn PDF document text
    • http://opensol.xyz/87546462056xfdpk.pdfIn PDF document text
    • http://reggis.info/surokezijimubozafedipizov7lrm7.pdfIn PDF document text
    • https://cdn.sqhk.co/dabozijide/alxjjgf/71481578724.pdfIn PDF document text
    • http://pitushok.fun/kitab_shahih_bukhari_bahasa_melayu1khxe.pdfIn PDF document text
    • https://xuwovovap.weebly.com/uploads/1/3/1/6/131607152/nefimazozenodol-samerem-fukevujutikewuw.pdfIn PDF document text
    • https://cdn.sqhk.co/wujakegu/jSghGjj/jackbox_party_pack_6_ps4_review.pdfIn PDF document text
    • http://wellwork.site/19865620129t1x5x.pdfIn PDF document text
    • http://gimemuwet.mypressonline.com/arta_seductiei_carte.pdfIn PDF document text
    • http://gamuxiwami.getenjoyment.net/91304482866.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/budovewesekaz/basha_movie_naa_songs_free.pdfIn PDF document text
    • https://s3.amazonaws.com/pasutiz/45330756739.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_off0000e7e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7E2 5488 bytes
SHA-256: 53cd3828fa5f1fd72abfde7a780ff356be5c34ea82ebfbeda735c9691bfb4a4a
font_01_sfnt_off0000fa7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA7B 12556 bytes
SHA-256: e80ed74559ef5f0f1fb0d9ae88c732c8d3912eb8f40218c3352a0d1394b853dc

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