Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c200dad2f83359a…

MALICIOUS

PDF

70.8 KB Created: 2021-02-11 22:14:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 76c606050a94b9234e7b65a1faa1a063 SHA-1: 488ed48ef53cdff761ed1f4ab101136ffa8ee9c0 SHA-256: 0c200dad2f83359afbe74c5cf07d192df919d4691231027895ef844a4e98af7d
96 Risk Score

Malware Insights

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

The PDF file contains a lure related to a textbook answer key, which is a common social engineering tactic. It embeds a URL that likely leads to a malicious payload or phishing page. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://druttle.ru/wix?keyword=realidades+2+capitulo+3b-5+answer+key PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4467027/normal_60145f6cc94e2.pdfIn PDF document text
    • https://cdn.sqhk.co/neratimo/irhfa4R/jujelul.pdfIn PDF document text
    • https://cdn.sqhk.co/daposofoxig/haihAgC/wattpad_app_status_video_download_tamil.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366041/normal_600a6b0a2c97b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489058/normal_5fe110ff8c118.pdfIn PDF document text
    • https://cdn.sqhk.co/gemesikexo/R0Fhjgf/hotel_story_resort_simulation_apk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480876/normal_5fdea61e1d751.pdfIn PDF document text
    • https://cdn.sqhk.co/tajudozizif/hd2Kfhc/motorcycle_trailer_hitch_carrier.pdfIn PDF document text
    • https://cdn.sqhk.co/dubikureta/9doshg2/chessington_drive_odenton_md.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459170/normal_5fd227015b0d9.pdfIn PDF document text
    • https://cdn.sqhk.co/vazoguzo/idghQge/piggy_call_mod_granny_prank_dial.pdfIn PDF document text
    • http://netusikofigo.22web.org/pabazijukevogorusumomif.pdfIn PDF document text
    • https://cdn.sqhk.co/saligoliti/iCiahji/lotubagapuvuwobuniragas.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/libosokune/excel_sheet_template.pdfIn PDF document text
    • https://s3.amazonaws.com/folexapurilowe/yekkada_yekkada_song_sad.pdfIn PDF document text
    • https://s3.amazonaws.com/gazijewevan/vesijatetu.pdfIn PDF document text
    • http://sunusegelu.rf.gd/checkbox_value_c_form.pdfIn PDF document text
    • https://s3.amazonaws.com/fasudikek/jawesuzapalefegajebaru.pdfIn PDF document text
    • http://sujimivotabis.rf.gd/jarofolowaza.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_off0000cfaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFAA 5924 bytes
SHA-256: 28f229359200257307b76896d5ccf03ce61e3f27c431eeaef8f64694b4b6113e
font_01_sfnt_off0000e402.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE402 12864 bytes
SHA-256: 8ac18c180f64efffbdf5a99f554bb3c39b0eb8d0d8699949158447fca1a5f0d0

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