Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ee8c5276b82f608…

MALICIOUS

PDF

58.2 KB Created: 2021-02-17 12:08:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4d1ef94a6f9db61758f1a1c591999d54 SHA-1: 7861669144460e6fd5966d35fdb20fe1424532dc SHA-256: 4ee8c5276b82f60810e7b155e20dfb21e6cf60036d199dd82700d8bb43b14514
212 Risk Score

Malware Insights

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

This PDF file is identified as malicious by multiple heuristics, including a critical finding for linking to known malicious redirector infrastructure and a PDF link farm. The document body, though heavily obfuscated, contains text related to 'Pokemon sun and moon booster box stores', suggesting a lure. The primary attack vector appears to be directing users to malicious URLs, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9637

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/strik?utm_term=pokemon+sun+and+moon+booster+box+stores
    • https://cdn-cms.f-static.net/uploads/4369306/normal_6026a8faebb9a.pdf
    • https://cdn-cms.f-static.net/uploads/4462362/normal_601344ddaaef3.pdf
    • https://cdn.sqhk.co/fejisedetu/jjgfhbQ/42795429123.pdf
    • https://cdn.sqhk.co/wakivugex/UhcWhb7/92308628057.pdf
    • https://cdn.sqhk.co/zunowexafa/ihdghSw/download_stickman_dismounting_2_mod_apk.pdf
    • https://kofosobi.weebly.com/uploads/1/3/4/5/134528260/7377043.pdf
    • https://cdn.sqhk.co/nowavutu/haYhdja/best_deals_right_now_clothing.pdf
    • https://falusawo.weebly.com/uploads/1/3/6/0/136084102/sofimawix.pdf
    • https://zoninezazazi.weebly.com/uploads/1/3/1/0/131070362/651348.pdf
    • https://titumakusijuvap.weebly.com/uploads/1/3/4/3/134353199/nawisumemelibozuba.pdf
    • http://selozufuwadapuw.66ghz.com/jalaju.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://ruzovufu.epizy.com/christmas_carols_lyrics_and_sheet_music.pdf
    • http://xezorepolik.epizy.com/alchemy_ios_game_guide.pdf
    • https://s3.amazonaws.com/kosipefojaw/xufosinizogek.pdf
    • https://s3.amazonaws.com/bolovopizonuki/vasotec_davis.pdf
    • https://s3.amazonaws.com/babetafaperaxov/43372241048.pdf
    • http://bibirosomuxir.epizy.com/tiwuponosotumasovut.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c750.bin
c9508b075772e7621323f31a90ca1e91686b46933b14dac9d450b00932c0810d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC750 5212 bytes

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