Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca2a4ebe1a50d713…

MALICIOUS

PDF

61.1 KB Created: 2021-02-23 00:06:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: af4e9ddc1e94fb7ba54b775d641362b3 SHA-1: 1d1585c7caed8fe931a26893ebb33382fdd998f7 SHA-256: ca2a4ebe1a50d713174ea2b48b7fb7b57300e9f4284c40369fe812401091d035
154 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which are disguised as product listings or search results, indicating a link farm or phishing attempt. The ClamAV detection and ML classifier further support its malicious nature. Although no scripts were explicitly extracted, the PDF structure and numerous external links suggest it is designed to redirect users to malicious websites, potentially for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8124

Heuristics 4

  • 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
  • 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://maypoin.ru/strik?utm_term=necchi+sewing+machine+model+3537 PDF link annotation
    • https://cdn.sqhk.co/nepofigiper/bzpqgen/tubing_bender_for_sale.pdfIn PDF document text
    • https://cdn.sqhk.co/bemovunilupo/hcrEjav/jujuguzomamuduseliwurefox.pdfIn PDF document text
    • http://bigno.space/flanders_and_swann_ill_wind_sheet_musicoq9xw.pdfIn PDF document text
    • http://vir-tus.com/barman_formation_belgiquexvqaz.pdfIn PDF document text
    • https://cdn.sqhk.co/zixedagiro/8ibhjgh/clean_road_game_download.pdfIn PDF document text
    • https://cdn.sqhk.co/buzomesil/hgw24he/43022381221.pdfIn PDF document text
    • https://cdn.sqhk.co/pixorikibam/jgtwRic/29782118784.pdfIn PDF document text
    • http://istlan.fun/android_symbol_phone_with_wifiwu2rl.pdfIn PDF document text
    • https://finaxapiw.weebly.com/uploads/1/3/5/3/135301963/sewisumikovu_vobajoduduvite.pdfIn PDF document text
    • https://cdn.sqhk.co/sawibevas/gh8D2gi/bagowekixamigojodobivoji.pdfIn PDF document text
    • https://cdn.sqhk.co/gobenebovi/jajjjeW/hangout_meaning_in_malayalam.pdfIn PDF document text
    • https://cdn.sqhk.co/wijelukifap/kNgciJI/u2_greatest_hits_song_list.pdfIn PDF document text
    • https://cdn.sqhk.co/runudori/jhhhLje/okcupid_search_function.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/wefadep/capturing_reality_crack.pdfIn PDF document text
    • https://s3.amazonaws.com/siwixomudit/relebaf.pdfIn PDF document text
    • https://s3.amazonaws.com/kifutizijebuj/noxotajafutudupodigoril.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d5d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5D3 5688 bytes
SHA-256: 81a48eb4d9b36db288494b4a799cd719f5f18a220679893208bfe9e650c37829

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