Malicious PDF — malware analysis report

Static analysis result for SHA-256 42d0786315cebdef…

MALICIOUS

PDF

79.1 KB Created: 2021-03-24 01:06:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4fb2feeb2f557ca3561bc9ea0976eadc SHA-1: 1a44a8f2d7d8c47299458d0e375baaa533413a48 SHA-256: 42d0786315cebdef68f391a2069fa2d5fbc50b36dae878481cfa458fb58fee17
154 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which are dynamically generated to appear as search results for books. This technique is often used to distribute malware or lead users to phishing sites. The ClamAV detection and ML classifier further indicate malicious intent, likely involving the download of a second-stage payload from one of the embedded URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6404

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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://seumenha.ru/award?keyword=augustus+nicodemus+lopes+livros+pdf
    • https://bovuxugiz.weebly.com/uploads/1/3/4/9/134901291/birepejowasavoxoz.pdf
    • https://jobikituloxexe.weebly.com/uploads/1/3/4/4/134456837/4405176.pdf
    • https://xabolagusi.weebly.com/uploads/1/3/4/6/134631680/kukesiwod_kolej.pdf
    • https://kufojomarolov.weebly.com/uploads/1/3/4/4/134401526/781a96366f.pdf
    • https://xesupolapiban.weebly.com/uploads/1/3/4/5/134586318/70d4c.pdf
    • https://nitavadokeja.weebly.com/uploads/1/3/1/1/131163909/16b72adbd.pdf
    • http://jerimujolegem.medianewsonline.com/sed_command_in_linux_with_examples.pdf
    • http://kidufamipowanot.mywebcommunity.org/how_to_enter_bios_setup_in_hp_pavilion_dv6_laptop.pdf
    • https://zanewodibamejat.weebly.com/uploads/1/3/0/9/130969445/wofafuwarapu.pdf
    • http://sawemawe.mywebcommunity.org/past_participle_spanish_worksheet.pdf
    • http://rotixumuzu.22web.org/happn_app_hack_apk.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://gapajafikotu.rf.gd/zaderujukageselukexijapaf.pdf
    • http://liroporuki.myartsonline.com/ginil.pdf
    • https://0b7b936c-93ac-4a60-9644-6ba220b934cc.filesusr.com/ugd/b4bf80_c9f365c89b1e4e9fb2b27338a6533540.pdf?index=true
    • https://8ecf7690-1f99-4e28-a4b6-3228ba9731d7.filesusr.com/ugd/63d3ad_5f8168a64137496889c518a0d97d6207.pdf?index=true
    • https://s3.amazonaws.com/wipotegadodorek/38050952909.pdf
    • https://2cc3dcad-61c1-4442-8662-ca5be7cd8672.filesusr.com/ugd/71b93f_04914ca2f5e94bee9080b2e6bb8af690.pdf?index=true
    • https://s3.amazonaws.com/paropabaru/gotemosobunizomewuradur.pdf
    • https://s3.amazonaws.com/fakuguvil/70148363085.pdf
    • http://robatirewixiwol.rf.gd/67185725941.pdf
    • https://s3.amazonaws.com/xebuvuwov/lurolaruso.pdf
    • http://lusiromipu.epizy.com/paleontology_geology_notes.pdf
    • https://s3.amazonaws.com/jijumupade/kiwarogujidavuxasipuwatob.pdf
    • https://e8e87dc5-637d-47ba-9de6-e7d98d123d78.filesusr.com/ugd/a69a03_f6afb21b74ab40dfa76c545fa95b4312.pdf?index=true
    • http://tituroxir.rf.gd/full_volume_meme_template.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011054.bin
e48e7656a18d5edcc37f766203f44d4a0047c708fb0c99b1903f4310733e57c3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11054 5316 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.