Malicious PDF — malware analysis report

Static analysis result for SHA-256 0959afb66c6803d1…

MALICIOUS

PDF

70.9 KB Created: 2021-02-19 19:00:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 54155e011d896214071e358457f08709 SHA-1: 13d46d575a2fd074e671ffbea4c58c298ead4a5e SHA-256: 0959afb66c6803d153718b25806a39dbd2bef76e89c2d325b5b71bf2235e7155
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that masquerades as a search result for tractor parts, likely to trick users into visiting a malicious site. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. No scripts were extracted, but the presence of an external URI is a primary indicator of a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://jottigo.ru/strik?utm_term=used+craftsman+lawn+tractor+parts+near+me PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4444374/normal_602e0ed459b6f.pdfIn PDF document text
    • https://cdn.sqhk.co/woteruzid/iasAicy/fiji_airways_contact_details.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386836/normal_60099862c85fc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446915/normal_5fdfaeb784579.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4499651/normal_6026d8b8c6b26.pdfIn PDF document text
    • http://dle-tpl.site/ayyappa_bhajans_lyrics_in_kannadaz4nbu.pdfIn PDF document text
    • https://cdn.sqhk.co/wobuwaseja/b7ijquY/dream_daddy_craig_guide.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403273/normal_5ffb7d06ddf72.pdfIn PDF document text
    • https://cdn.sqhk.co/zozijawutuxu/hTkwheu/candy_crush_commercial_song_ring_the_bell.pdfIn PDF document text
    • https://cdn.sqhk.co/duxadikoti/feUDFgc/bapuzosoneniso.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485153/normal_602b5ba258439.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/sizadagazagaj/pirate_video_copilot.pdfIn PDF document text
    • https://s3.amazonaws.com/tulosa/foratobawupidiwujaje.pdfIn PDF document text
    • https://s3.amazonaws.com/bededuxotulapil/48670889195.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ca1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA1A 5124 bytes
SHA-256: 4d3f890937b15bc53007f3b6c7e91f4a45c9c44f3a3e8189597376581ae7e939
font_01_sfnt_off0000db7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB7C 10820 bytes
SHA-256: a89eb8f94391cb1023192ba23b55339dc9d2e793a2e765669cd15eac40b6959f
font_02_sfnt_off0001002d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1002D 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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