Malicious PDF — malware analysis report

Static analysis result for SHA-256 94be18468589ab69…

MALICIOUS

PDF

76.3 KB Created: 2021-03-20 04:44:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d7fb7b774069eb3c913d8bfc87e865b2 SHA-1: 631b81fcf37677ef8ca9ebbeaa5e1dd1d58d2dd3 SHA-256: 94be18468589ab6943c8fc030db33fbf46d27c87f78e5e668f929e4a77b3f344
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 generated to appear as search results for various topics, including "ancient cities of indus valley civilization pdf". This technique is commonly used in SEO link farms to drive traffic to malicious websites. The ClamAV detection as Pdf.Phishing.Trojan suggests a phishing or trojan-based intent, likely facilitated by the embedded URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5555

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://maypoin.ru/award?keyword=ancient+cities+of+indus+valley+civilization+pdf
    • https://jukosixosibi.weebly.com/uploads/1/3/1/8/131871462/551b37.pdf
    • https://ziruxirunilexa.weebly.com/uploads/1/3/0/7/130775543/6141283.pdf
    • http://jiludedo.iblogger.org/97000457161.pdf
    • https://kigadipokifexi.weebly.com/uploads/1/3/0/8/130813079/domivew_giwexe_vazibiwapam.pdf
    • https://nusuxoxoli.weebly.com/uploads/1/3/2/7/132710665/luzifodidogavuwegiz.pdf
    • https://rujafamuzesoka.weebly.com/uploads/1/3/5/3/135339602/582c54975f408e8.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://0aed7b51-d02b-4864-a6bb-b478bb809667.filesusr.com/ugd/fbdaab_3dad0d3fac2e4a8ca59ce74bd34d0549.pdf?index=true
    • http://kesugonapopuw.epizy.com/lubega.pdf
    • http://weguxuwe.epizy.com/what_are_the_types_of_relation_in_function.pdf
    • https://s3.amazonaws.com/sowirutelevolur/adobe_reader_pro_for_pc_free.pdf
    • https://s3.amazonaws.com/dadupawo/wafevurizew.pdf
    • http://jozixal.epizy.com/73723393825.pdf
    • https://d670dda7-df53-4ef1-8eda-d3256df28744.filesusr.com/ugd/dbbbec_5b6227f08b3543b3947a66bc50034c42.pdf?index=true
    • http://xejolufu.epizy.com/reinforced_concrete_design.pdf
    • http://nufurezoguboli.epizy.com/66580247284.pdf
    • https://6d4cd3b7-91e9-43ac-92b9-205473f1e50d.filesusr.com/ugd/28146e_ff817f94d9524728a4051d96dc26ab3f.pdf?index=true
    • http://bixogonabu.epizy.com/apple_after_hours_earnings_report.pdf
    • https://s3.amazonaws.com/mafavuzenoliki/38231148273.pdf
    • https://86f5e18a-8766-4ae7-b9bf-31430b627380.filesusr.com/ugd/911c12_9d742c8a4c254d9dbeff3763b8166bda.pdf?index=true
    • https://s3.amazonaws.com/remavuj/first_grade_math_worksheets_printable.pdf
    • https://s3.amazonaws.com/poresi/woxipedaz.pdf
    • https://s3.amazonaws.com/wudibirewuduto/95536349360.pdf
    • https://s3.amazonaws.com/lomogas/vezevufuzibotatenudog.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ff12.bin
46e83c0167423b768be69e7107f4ec7c2990a63918df32803fae564d255dfed7
pdf-font-stream PDF embedded font (sfnt) at offset 0xFF12 3396 bytes
font_01_sfnt_off00010b21.bin
d57e130421d93d487cfd68d1573fbe90f714aed701965fba6f25728762213bc9
pdf-font-stream PDF embedded font (sfnt) at offset 0x10B21 5256 bytes