Malicious PDF — malware analysis report

Static analysis result for SHA-256 0eaaa1feaaca8070…

MALICIOUS

PDF

74.1 KB Created: 2020-11-20 05:48:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 1fef1f1440188f41499d0296a0588d4a SHA-1: 207798cae0b4d6f20c3ac1f19b3a82ce6eedd716 SHA-256: 0eaaa1feaaca8070b0f7793c9fb4ad8f24922b58b239c929d32977c3795eabc5
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/123?utm_term=milkweed+book+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4474980/normal_5fac487feb3d7.pdfIn PDF document text
    • https://rijizego.weebly.com/uploads/1/3/0/7/130776487/6e7516eaaab.pdfIn PDF document text
    • https://jarapitoxedomel.weebly.com/uploads/1/3/1/4/131437170/7058207.pdfIn PDF document text
    • https://wuvirinofibugiz.weebly.com/uploads/1/3/1/0/131070402/vufer-xiwuvomabuta-guzaw-nafilin.pdfIn PDF document text
    • https://fisizupesaxog.weebly.com/uploads/1/3/1/6/131636899/nanajuzejurevibi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393503/normal_5f8fa4e74c7c0.pdfIn PDF document text
    • https://lapenemelibi.weebly.com/uploads/1/3/4/7/134708636/dunisosozolepo-riwuwodib.pdfIn PDF document text
    • https://toguxiwo.weebly.com/uploads/1/3/4/6/134645105/662ff5.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/vesubodufisi/gemesurudamulabewob.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60358f9a-3919-4450-8232-0ecbf070b49f/guxabakeboropedusixisipur.pdfIn PDF document text
    • https://s3.amazonaws.com/kisimujuk/thinknoodles_granny_nightmare.pdfIn PDF document text
    • https://s3.amazonaws.com/degisapemifa/50616200509.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/adobe_photoshop_cc_tutorials_for_beginners_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/adobe_acrobat_reader_indir_gezginler.pdfIn PDF document text
    • https://s3.amazonaws.com/vexeliku/free_omharmonics_meditation_audio.pdfIn PDF document text
    • https://s3.amazonaws.com/sezebepit/carcinoma_prostata.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/83063dd2-31b7-4b5b-8fd4-004a32dd3086/pezibesoxenidixib.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_off0000e646.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE646 4852 bytes
SHA-256: a03be6083c22bb2c43db2e84b8504a787b4b8dec9202a2306dc9d09a384c2041
font_01_sfnt_off0000f6f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6F6 10736 bytes
SHA-256: 6f7b6b3958d38867ca5c7bdd3b5f4bc45054e68319f8dcebcbfb721cfd631326

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