Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9ed388743e94547…

MALICIOUS

PDF

75.8 KB Created: 2021-03-15 15:47:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 233b250c057766c49293cf992725f8a0 SHA-1: 3c6e491362fc1a65943ec2075fad4ff27f66df9a SHA-256: a9ed388743e9454731a50207f93e539d6576f9aff8c266c37ae64beeac122d20
156 Risk Score

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 scam attempt. The document body, though heavily obfuscated, contains a reference to 'Kannada love feeling album video songs', likely a lure to direct users to external websites. The PDF contains a large number of external links, many pointing to PDF files hosted on various domains, suggesting a link farm or redirection mechanism to further malicious content.

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://vilenefex.ru/123?utm_term=kannada+love+feeling+album+video+songs PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4375891/normal_5febcd17e8e31.pdfIn PDF document text
    • https://nopuwujipa.weebly.com/uploads/1/3/5/4/135400678/2657262.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414175/normal_5fddc0b509d91.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460057/normal_603dec3dc6aa5.pdfIn PDF document text
    • https://dexulana.weebly.com/uploads/1/3/4/2/134234773/2df4ccefec1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387035/normal_5ff25666bc000.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371025/normal_600c1dd284f86.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426073/normal_5fd8f6b9a1cef.pdfIn PDF document text
    • https://fukenotaza.weebly.com/uploads/1/3/2/7/132740373/jeliwikejov-kokesegime-robaf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450889/normal_5febe575586f3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454973/normal_602cd83af3865.pdfIn PDF document text
    • https://cdn.sqhk.co/torixugajo/ggihcia/drawer_runners_heavy_duty_cape_town.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472763/normal_5fd32eee5fad9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383804/normal_603436298af1d.pdfIn PDF document text
    • https://cdn.sqhk.co/fofubulami/gs4hfx0/69107182344.pdfIn PDF document text
    • https://cdn.sqhk.co/tatidukigag/jfickjh/48574750067.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/vokeri/the_song_soundtrack_listen.pdfIn PDF document text
    • https://s3.amazonaws.com/xugigabitulu/rugged_android_tablet_india.pdfIn PDF document text
    • https://s3.amazonaws.com/mojivikapeti/kilujusewumigebileriwator.pdfIn PDF document text
    • https://s3.amazonaws.com/zafijukopa/the_incredible_burt_wonderstone_movie_300mb.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_off0000e9e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9E5 5300 bytes
SHA-256: 3c0c866ba3b3d0551eb97ef1f4b5b93c463fb6fcded5370925469dcd4976b5d1
font_01_sfnt_off0000fbeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBEB 11116 bytes
SHA-256: d033601593803ea68e3d57ea445bf95a6cb6ea6b93a38d6ab139eb93cffb0f86

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