Malicious PDF — malware analysis report

Static analysis result for SHA-256 f68198c9e2d1cc41…

MALICIOUS

PDF

117.7 KB Created: 2021-01-24 05:17:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 2cada104f1a2cc3eb63da0743be89075 SHA-1: 978ab872e6df9799b597d934ca98e0b946da0c98 SHA-256: f68198c9e2d1cc41eecacc1f1df02a45733e4a768c3690b735ac2d7ac8f8ad97
156 Risk Score
Tags
free-cdn-ebook-manual-lure

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 suspicious or lead to potentially malicious content, as indicated by the 'PDF_SEO_LINK_FARM' and 'ML_NYX_PDF_MALICIOUS' heuristics. ClamAV also detected it as 'Pdf.Phishing.Trojan'. The embedded URLs suggest an attempt to redirect users to malicious sites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://bologen.ru/123?utm_term=special+characters+allowed+in+league+of+legends+ph PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4460043/normal_60005d988b7cc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484631/normal_5ff77203eac5c.pdfIn PDF document text
    • https://site-1197523.mozfiles.com/files/1197523/cpk_mb_report.pdfIn PDF document text
    • https://site-1168348.mozfiles.com/files/1168348/74276341966.pdfIn PDF document text
    • https://site-1178934.mozfiles.com/files/1178934/athletic_sports_performance.pdfIn PDF document text
    • https://site-1174394.mozfiles.com/files/1174394/tenazozatekigom.pdfIn PDF document text
    • https://gabofulonu.weebly.com/uploads/1/3/4/7/134730366/ladetajuwix.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410004/normal_600c6fe016e10.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/suximawo/bitanubife.pdfIn PDF document text
    • https://s3.amazonaws.com/pewebopufupe/62592224922.pdfIn PDF document text
    • http://tumewadeb.epizy.com/61392686169.pdfIn PDF document text
    • http://xunaxutuwu.rf.gd/somakepofilovoporika.pdfIn PDF document text
    • https://s3.amazonaws.com/bevarolimesale/79325063828.pdfIn PDF document text
    • https://s3.amazonaws.com/febopa/musoziwubagataf.pdfIn PDF document text
    • https://s3.amazonaws.com/vufupu/zagabigizokizobazuniw.pdfIn PDF document text
    • https://s3.amazonaws.com/levovod/37282087602.pdfIn PDF document text
    • https://s3.amazonaws.com/bidivo/rimepefakofota.pdfIn PDF document text
    • https://s3.amazonaws.com/juvuraguvutoxif/lejozulefudaxomitedelago.pdfIn PDF document text
    • https://s3.amazonaws.com/tetofamuxulil/sweet_candy_camera_apkpure.pdfIn PDF document text
    • http://tidomag.epizy.com/sedomek.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_off00018db4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18DB4 5612 bytes
SHA-256: 7159026a222388a480450def12712694ff0571667301140860bb79614d714006
font_01_sfnt_off0001a0d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A0D6 11848 bytes
SHA-256: b503605f37fe2043950a0b1fbabab77c730edc1c581364ed69e480c54a5f2217

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