Malicious PDF — malware analysis report

Static analysis result for SHA-256 7319b63c2a472d68…

MALICIOUS

PDF

73.4 KB Created: 2021-03-11 11:30:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 5f56cd8f56d3445ff9941621e0b8092a SHA-1: d08b927027069bb2496b10038aacc19ebd1e72d6 SHA-256: 7319b63c2a472d6849030196775e9f53d215437dd42d17ce6c55c6f86799089f
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link T1059.007 JavaScript

The PDF file contains numerous external links, a technique often used for SEO manipulation to drive traffic to malicious sites. The ML classifier and ClamAV detection strongly indicate malicious intent, specifically identified as a phishing trojan. The embedded URL suggests a lure to download further malicious content, likely disguised as a screenplay.

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://druttle.ru/123?utm_term=avengers+age+of+ultron+screenplay+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4474206/normal_602b8c26a0c6a.pdfIn PDF document text
    • https://cdn.sqhk.co/jebumujo/ijZ3VdB/bole_chudiyan_hd_video_free.pdfIn PDF document text
    • https://nezivubu.weebly.com/uploads/1/3/1/3/131384481/0f9a64396b2f25.pdfIn PDF document text
    • https://degewobajobazim.weebly.com/uploads/1/3/5/3/135324790/kazawikaw.pdfIn PDF document text
    • http://likelid.xyz/fifty_shades_of_grey_songs_mp3_download_songsloverypzds.pdfIn PDF document text
    • https://mabamigetope.weebly.com/uploads/1/3/4/4/134493328/tijodekaro.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409250/normal_5fe42fe8edb29.pdfIn PDF document text
    • https://cdn.sqhk.co/reretukida/ib8Nia3/tovala.pdfIn PDF document text
    • https://cdn.sqhk.co/sovanoniwuva/ihfhf6g/football_games_offline_free_for_pc.pdfIn PDF document text
    • http://sentytld.online/fudugomumuzuripiwuxikekcj42.pdfIn PDF document text
    • https://xakebugus.weebly.com/uploads/1/3/4/0/134018628/mamorug.pdfIn PDF document text
    • https://sukaxivex.weebly.com/uploads/1/3/4/8/134895869/relixiveturi.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/napoledunadigo/70070896947.pdfIn PDF document text
    • https://s3.amazonaws.com/vitelitubovuluj/57773875030.pdfIn PDF document text
    • https://s3.amazonaws.com/fadobirak/algorithmic_trading_india.pdfIn PDF document text
    • https://s3.amazonaws.com/fotepopunaj/how_to_connect_epson_printer_to_new_wifi_network.pdfIn PDF document text
    • https://s3.amazonaws.com/jinabisura/54487952181.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_off0000e3bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3BB 5472 bytes
SHA-256: 55a4115fee98f2545e6ec6d50810bd2d6ea7a4ba2b1e51e141682c6dec5a6601
font_01_sfnt_off0000f681.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF681 10036 bytes
SHA-256: 5655a0727f50501f71ffa5be944b9c5d3e9108dffff4f282c902f1d61630bcf2

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