Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9ae446568e8201c…

MALICIOUS

PDF

72.1 KB Created: 2021-03-15 08:08:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 71cce15b72b6b8a404db0f70e407f088 SHA-1: 7474806afb38a7c8748c94aaacad262c51f86824 SHA-256: e9ae446568e8201c7970f7d2e85010733977a20ad8fe498775fcdddf9e9a05e9
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan threat. The PDF contains a large number of external links, suggesting a link farm or redirection mechanism to malicious sites. While no scripts were explicitly extracted, the PDF structure and embedded URLs point towards an attempt to direct users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://soxebez.ru/strik?utm_term=hal+leonard+bass+method+mp3 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4463788/normal_5ff03acc70e67.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402718/normal_5fef0a362ee40.pdfIn PDF document text
    • https://rebomavarel.weebly.com/uploads/1/3/4/8/134883959/volipip_vuxuvasabuwusox.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450139/normal_604110b6240bc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482869/normal_5ff523e6ca9c8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420037/normal_5ff7d75d2acd7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369796/normal_6003153809af1.pdfIn PDF document text
    • https://rakevuxex.weebly.com/uploads/1/3/4/0/134040666/3158352.pdfIn PDF document text
    • https://safodejinuvi.weebly.com/uploads/1/3/4/7/134753113/bef7d0b4c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485689/normal_600e729d4390f.pdfIn PDF document text
    • https://wujawosekeg.weebly.com/uploads/1/3/4/7/134712458/4285058.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371790/normal_5ff768d4707fd.pdfIn PDF document text
    • https://gufakapefevem.weebly.com/uploads/1/3/5/9/135994046/5361483.pdfIn PDF document text
    • http://dazomasuw.22web.org/youngblood_band_sheet_music.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rojuzejuleg.rf.gd/83964827891.pdfIn PDF document text
    • http://tazolupiviroliz.epizy.com/68218506842.pdfIn PDF document text
    • https://s3.amazonaws.com/vufuzewasi/desierto_2015_full_movie_free.pdfIn PDF document text
    • http://vatimofaxemog.rf.gd/bibliography_in_latex.pdfIn PDF document text
    • https://s3.amazonaws.com/nafoxuda/movakebuwofa.pdfIn PDF document text
    • https://s3.amazonaws.com/kuxegu/zoom_g1xon_guitar_processor.pdfIn PDF document text
    • https://s3.amazonaws.com/tedowafomaru/negupanavoribemi.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d494.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD494 5464 bytes
SHA-256: 179e14bbb1c75bf3bae3c53e8c6d25d194109f2420a4a816b0a842a5e641216c
font_01_sfnt_off0000e6ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6EE 13288 bytes
SHA-256: 0c9db7983247d4546901d0a34aed05bdf008cc82c42ec1755bd152d4ddc48a60

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