Malicious PDF — malware analysis report

Static analysis result for SHA-256 95615aa57644f206…

MALICIOUS

PDF

69.5 KB Created: 2021-03-25 10:34:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 48eafd6c443433b2ef35026e164f1a10 SHA-1: d6786b47d6729193f3feb90f065b748dfbb03226 SHA-256: 95615aa57644f2066e76466bbbd5375555288481ce5920ecb9b7cab6aa216846
212 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, many of which point to external PDF files hosted on various platforms. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' indicates that at least one of these links directs to known malicious infrastructure. The 'PDF_SEO_LINK_FARM' heuristic further suggests a large number of these links are intended to manipulate search engine results, likely as part of a phishing or malware distribution scheme. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6895

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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://yafferge.ru/award?keyword=baseball+rules+and+regulations+pdf
    • https://sakobapo.weebly.com/uploads/1/3/3/9/133999770/5944963.pdf
    • http://muzesumulel.getenjoyment.net/longman_cutting_edge_upper_intermediate_student_book.pdf
    • https://cdn-cms.f-static.net/uploads/4426063/normal_601c9af71ff4b.pdf
    • https://namekabesomi.weebly.com/uploads/1/3/4/6/134668803/pizaso_fevuf_taguxozam.pdf
    • https://vadizomozizi.weebly.com/uploads/1/3/5/4/135400682/9ea0788713aeb.pdf
    • https://disaxugotusineg.weebly.com/uploads/1/3/1/8/131871710/7b09c4de.pdf
    • https://jipibivit.weebly.com/uploads/1/3/4/0/134012636/rilotanoguk.pdf
    • http://kejoxemubogese.mywebcommunity.org/accountant_resume_format.pdf
    • https://nudopimiga.weebly.com/uploads/1/3/1/0/131070212/jawinunime_nonibubesap.pdf
    • https://kurenilomu.weebly.com/uploads/1/3/4/0/134042522/surisevapinu.pdf
    • https://lezigumaluneluw.weebly.com/uploads/1/3/1/4/131454696/b11b2e8b7db.pdf
    • https://cdn-cms.f-static.net/uploads/4460230/normal_6035e57bee6b1.pdf
    • https://static.s123-cdn-static.com/uploads/4384647/normal_5fe4ec62676cb.pdf
    • https://xajomorunineg.weebly.com/uploads/1/3/1/3/131383441/5857953.pdf
    • https://navikeput.weebly.com/uploads/1/3/4/7/134755574/zaxafokorej.pdf
    • http://nigavereke.mygamesonline.org/33202023583.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://jomupaz.myartsonline.com/41475844393.pdf
    • https://s3.amazonaws.com/nafamaragisek/dodotuzapopududaga.pdf
    • https://s3.amazonaws.com/zijivevip/rang_barse_song_lyrics.pdf
    • https://s3.amazonaws.com/xakusineba/9997076361.pdf
    • https://s3.amazonaws.com/verirejon/xinede.pdf
    • https://s3.amazonaws.com/xowasosuf/indian_rupee_symbol_for_ms_word.pdf
    • https://s3.amazonaws.com/gazivemon/jaspersoft_report_default_date_format.pdf
    • https://s3.amazonaws.com/bisute/mutazenefuxeginijen.pdf
    • https://s3.amazonaws.com/viromibukoleliw/arrayadapter_java_android.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f6c5.bin
afe55c12d102df3a42f7403f0d70379a10d638645f55c4981de1fc122bfee9ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF6C5 5396 bytes

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