Malicious PDF — malware analysis report

Static analysis result for SHA-256 47c613136d4e3783…

MALICIOUS

PDF

71.8 KB Created: 2021-03-17 11:45:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6a6a561f0df85ec76306b23793485475 SHA-1: 29d97d0fd18cccdfd53185b08f575638bef57305 SHA-256: 47c613136d4e3783853b8c247231f98ea261d2e2805f2bbdf1f17621e9ef0fb7
164 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or a distribution point for malicious content. The ClamAV detection and ML classifier further support its malicious nature. While no scripts were explicitly extracted, the presence of numerous external URLs indicates a potential for downloading further payloads or redirecting users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=indesign+table+templates
    • https://mepovokure.weebly.com/uploads/1/3/0/9/130969824/tirawopinaj-rufezopoga.pdf
    • https://cdn.sqhk.co/naruxibe/ibwji4U/freeze_pumpkin_pie_filling.pdf
    • https://cdn.sqhk.co/pulazapusaw/l9ZZSW0/jumbled_words_puzzle_whatsapp_answers.pdf
    • https://cdn.sqhk.co/jesupasuzoku/fiabL16/avis_car_rental_cross_border_xpress.pdf
    • https://cdn-cms.f-static.net/uploads/4453890/normal_60273e309e2a0.pdf
    • https://cdn.sqhk.co/fotinegataso/thj71gd/begawasitaxidakagewuvuwu.pdf
    • https://jomefibid.weebly.com/uploads/1/3/4/5/134596324/5b71e9ed9c02.pdf
    • http://xugewozovu.22web.org/76459818927.pdf
    • https://cdn.sqhk.co/sanobude/79SOghY/17057569554.pdf
    • https://bagawilikazukir.weebly.com/uploads/1/3/1/0/131070307/1d23efce415d9c9.pdf
    • https://static.s123-cdn-static.com/uploads/4421339/normal_6000592612907.pdf
    • https://munuteme.weebly.com/uploads/1/3/4/8/134862418/kenifajapi_feboridekinuwu.pdf
    • https://cdn.sqhk.co/lewiwifo/jijNxD1/62527662200.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/vezumobigodub/kiramu.pdf
    • http://vukanaxugosazed.rf.gd/xitisisuxuvowusit.pdf
    • https://s3.amazonaws.com/lovetijif/akinetic_rigid_syndrome.pdf
    • http://renowuvix.epizy.com/speak_softly_love_violin_sheet_music.pdf
    • https://s3.amazonaws.com/sedimeraxufi/bang_bang_full_video_song_mp4.pdf
    • https://s3.amazonaws.com/dinigugaxej/80922200534.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d975.bin
ff58d84ee798dfb3aee4cd54b987ae67f283b7fed75732ce652e97c50f2e8a31		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD975 5260 bytes
font_01_sfnt_off0000eb42.bin
222cb9ce3a6f0909ee144ecebbc3f08af07d9bfd49a5741071dc78cf21a50ff1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEB42 10956 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.