Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0a69e72d4d08452…

MALICIOUS

PDF

69.5 KB Created: 2021-03-24 16:20:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3e805c6a4af3c690f23e0556f74757f6 SHA-1: cd760907b7d0930045ef48ce981e4078634aa482 SHA-256: b0a69e72d4d08452579a1f02898337e7424d2a9c0e9f862c48f0be0d62230800
154 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which are hosted on Weebly subdomains, suggesting a link farm or SEO poisoning tactic. The embedded URLs and the heuristic firings indicate that this document is designed to redirect users to malicious websites, likely for phishing or to download further malware. No scripts were extracted, but the PDF structure and numerous external links strongly suggest malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9015

Heuristics 4

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://midufefew.ru/award?keyword=acetonitrile+sds+pdf
    • https://pekubitox.weebly.com/uploads/1/3/4/4/134477952/jivet.pdf
    • https://lezevonunibo.weebly.com/uploads/1/3/4/5/134577944/4728691751c440b.pdf
    • https://busejutepegojo.weebly.com/uploads/1/3/4/7/134773147/falaz.pdf
    • https://cdn-cms.f-static.net/uploads/4457563/normal_5fe787a0098fa.pdf
    • http://skidki-day.site/808897033696by0p.pdf
    • http://prodson.fun/books_of_the_bible_law_prophetsd1es6.pdf
    • http://dlkmvkoenv.info/die_unendliche_geschichte_filmnmivo.pdf
    • https://vulefewaxamovu.weebly.com/uploads/1/3/3/9/133997320/maruwe.pdf
    • https://cdn-cms.f-static.net/uploads/4366020/normal_604ca204c09ef.pdf
    • https://lezanaxowap.weebly.com/uploads/1/3/2/6/132696506/3158369.pdf
    • https://static.s123-cdn-static.com/uploads/4370317/normal_5ffa7e5dbf83c.pdf
    • http://xteenware.online/apprendre_a_lire_un_ecg5bd3j.pdf
    • https://zuzuvisaze.weebly.com/uploads/1/3/0/7/130738998/454983c42dc.pdf
    • https://static.s123-cdn-static.com/uploads/4493195/normal_5ff7565063f4d.pdf
    • https://lukenuba.weebly.com/uploads/1/3/1/6/131636916/09793449e.pdf
    • https://cdn-cms.f-static.net/uploads/4494139/normal_602d3757aa8d3.pdf
    • http://formblckr1.xyz/the_universe_next_doorvtaxb.pdf
    • https://dawanuma.weebly.com/uploads/1/3/4/3/134305997/8494842.pdf
    • https://bisobozewex.weebly.com/uploads/1/3/0/9/130969373/tivoxu_juzulig.pdf
    • https://cdn-cms.f-static.net/uploads/4453902/normal_60299f604110f.pdf
    • http://igonlinesupport.com/zulegavudesomejoxonikflgka.pdf
    • http://sq11mini.com/kubugoruwbt0d0.pdf
    • http://baranaydin.org/vezadonovugurezekewewirusq5vo8.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e0fe.bin
31f13ee8448b616a59261644d5549c8fb407a0fde8d9be5faa8164994f4f6724
pdf-font-stream PDF embedded font (sfnt) at offset 0xE0FE 4928 bytes
font_01_sfnt_off0000f1d4.bin
9d538a01682b03b01292e890b1fa00976a700b302c05d59fe485a8b85c03a637
pdf-font-stream PDF embedded font (sfnt) at offset 0xF1D4 10912 bytes