Malicious PDF — malware analysis report

Static analysis result for SHA-256 a75857d489d06dfd…

MALICIOUS

PDF

69.5 KB Created: 2021-06-01 08:13:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2b04e00859710d2d774c2cce54a9fc48 SHA-1: 2986941e54b64e42533f7cccd8a2835d4e8f1006 SHA-256: a75857d489d06dfdd6efd46e895e87d728c3fbff68ab7e9329272d0b8255c828
154 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many pointing to file-sharing or document hosting services, suggesting a link farm or a method to distribute further payloads. The presence of a ClamAV detection for 'Pdf.Phishing.Trojan' and ML classification further indicates malicious intent. The document body, though heavily corrupted, contains text related to 'Erdas imagine 2016 free trial download', indicating a phishing or social engineering lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8395

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://garglob.ru/pbw?utm_term=erdas+imagine+2016+free+trial+download
    • https://gakubuzavesow.weebly.com/uploads/1/3/0/8/130813888/penerewuzagixok.pdf
    • https://jiwamotezonadiw.weebly.com/uploads/1/3/4/3/134325797/c59b4683604e.pdf
    • https://voxuvuru.weebly.com/uploads/1/3/5/3/135390020/b4b923467de.pdf
    • https://duzejuwilana.weebly.com/uploads/1/3/4/8/134879611/3764605.pdf
    • https://gejovekozeja.weebly.com/uploads/1/3/4/4/134401956/lajewusiseta-tevubovig-lubuxisu-kelinazapegezid.pdf
    • https://nupariredarig.weebly.com/uploads/1/3/4/3/134357859/zudiruxakipamus-kogizudiwixukig.pdf
    • https://wetusaseri.weebly.com/uploads/1/3/5/2/135297966/1959135.pdf
    • https://sarowamirubene.weebly.com/uploads/1/3/4/7/134736793/neredidavigek.pdf
    • https://dofetavazazu.weebly.com/uploads/1/3/1/0/131071127/68fd02e.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://zikasamu.pbworks.com/w/file/fetch/144434193/bozagiw.pdf
    • http://jesababa.pbworks.com/f/kalimas_in_roman_english.pdf
    • http://sazupamufode.pbworks.com/f/85299276949.pdf
    • http://mikabipi.pbworks.com/f/vofowixofulaguv.pdf
    • http://fufitiruw.pbworks.com/w/file/fetch/144426672/how_do_i_update_my_moultrie_camera_firmware.pdf
    • http://kiletejude.pbworks.com/w/file/fetch/144427806/kozufajudira.pdf
    • http://bovozajezo.pbworks.com/w/file/fetch/144440238/novid.pdf
    • http://wisarazed.pbworks.com/w/file/fetch/144441519/41248144676.pdf
    • http://bovojigu.pbworks.com/w/file/fetch/144420165/winter_horse_feeding_advice.pdf
    • http://bemulopawed.pbworks.com/w/file/fetch/144447636/ronelufedotasos.pdf
    • http://lekuzax.pbworks.com/w/file/fetch/144418746/how_to_put_onn_earbuds_in_pairing_mode.pdf
    • http://rimogeto.pbworks.com/w/file/fetch/144427779/33285906033.pdf
    • http://didaneguk.pbworks.com/f/wipobogofutamuxelulunebip.pdf
    • http://sinorodolu.pbworks.com/w/file/fetch/144445011/202076894.pdf
    • http://xojifot.pbworks.com/f/the_21_day_sugar_detox_yes_no_list.pdf
    • http://wuvebag.pbworks.com/w/file/fetch/144427191/tepixagosituxozidamafuz.pdf
    • http://kedetuwi.pbworks.com/w/file/fetch/144428055/how_to_test_insulation_resistance_of_a_transformer.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e5e7.bin
fadb0e31c364ac168b75a78b43e4ffe2f6246a8e263aa2ce433aeb669a69bc11		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE5E7 5544 bytes

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