Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c15bcd0c7641266…

MALICIOUS

PDF

66.8 KB Created: 2021-03-17 17:54:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8a427f1526a07596cb0d4c251243f0d3 SHA-1: edb39cc051f066319f73afd7bdce61a5adb03ad8 SHA-256: 6c15bcd0c76412663f333e19fc0da636fb83200c3333db1a1af04d04b1ce26cd
154 Risk Score

Malware Insights

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

The PDF contains numerous external links, a technique often used for SEO manipulation or to redirect users to malicious sites. The heuristic 'PDF_SEO_LINK_FARM' specifically indicates a large number of external links within the document. The embedded URLs and the ClamAV detection further support its malicious nature, suggesting it's part of a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7003

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://golowaki.ru/award?keyword=internal+body+parts+pictures+with+names+pdf
    • https://lobakazuperowe.weebly.com/uploads/1/3/4/3/134352895/rabodomitoxema_pitijevanosepor_ninevidik.pdf
    • https://doxiviju.weebly.com/uploads/1/3/2/3/132302912/e302b5d19.pdf
    • https://nexevakef.weebly.com/uploads/1/3/5/3/135327015/c2dbfb583ad.pdf
    • https://dirovobu.weebly.com/uploads/1/3/5/3/135319654/3904089.pdf
    • https://sererewaxux.weebly.com/uploads/1/3/4/9/134903335/pijulip.pdf
    • http://gizigevom.mygamesonline.org/mumbai_cooperative_housing_society_bye_laws.pdf
    • http://xijulefabogi.getenjoyment.net/mpsc_prelims_2020_answer_key.pdf
    • https://milakixu.weebly.com/uploads/1/3/1/4/131483020/55d22204174f.pdf
    • https://bilujadaju.weebly.com/uploads/1/3/4/7/134772480/6717067.pdf
    • https://mubazujozij.weebly.com/uploads/1/3/4/7/134705676/3863182.pdf
    • https://lekemevegov.weebly.com/uploads/1/3/1/4/131410090/7386744.pdf
    • http://gamuxiwami.getenjoyment.net/how_much_windscreen_replacement_cost.pdf
    • http://jiwitoletazadag.iblogger.org/surah_al_mulk_merdu_wanita.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://biwagevaku.epizy.com/86718924931.pdf
    • https://s3.amazonaws.com/wixamupelinere/ammonium_sulphate_precipitation.pdf
    • https://s3.amazonaws.com/lulelepese/all_about_russian_formalism.pdf
    • http://tapopopabe.rf.gd/how_do_you_test_a_landscape_lighting_transformer.pdf
    • https://s3.amazonaws.com/tesapibebujep/17661923874.pdf
    • https://s3.amazonaws.com/betefowubevat/what_are_the_key_elements_of_person_centred_theory.pdf
    • http://vixekufu.epizy.com/gezirev.pdf
    • https://s3.amazonaws.com/sugosubexez/jimosanefo.pdf
    • http://gilaniborifavap.epizy.com/spelling_words_list_e-_3_answer_key.pdf
    • http://gixopiv.onlinewebshop.net/2518167928.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f0df.bin
fcdcb9652436b18161c49fb70396deaff110162a8187a4c757f5c846bb31c5fe		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF0DF 5664 bytes

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