Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3e617cd7c744072…

MALICIOUS

PDF

75.7 KB Created: 2021-02-21 18:34:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: e0fcb8e65521dd65c319a7a63d2d8915 SHA-1: 2a3b6b340d53a7e88f34264eabfbdb3345e9965b SHA-256: d3e617cd7c744072209196015c29e970ae55a9230d554f8cb9426f925a4ee4eb
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'baarspo.ru', which is presented to the user as a Kindle user manual. The presence of embedded URLs and the ML classification strongly suggest a phishing or malware delivery attempt.

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://baarspo.ru/aws?utm_term=kindle+fire+hd+6+user+manual+pdf PDF link annotation
    • http://naturaitalia.space/90786456169f4suh.pdfIn PDF document text
    • https://cdn.sqhk.co/gexopoku/6hg8JHT/warpath_game_android.pdfIn PDF document text
    • http://realnoe-obshenie.online/cant_connect_to_internet_with_hotspotfb5vr.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403952/normal_5fc827b035739.pdfIn PDF document text
    • https://cdn.sqhk.co/takoxuwal/bdhjYG4/sloth_in_spanish.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366964/normal_6027c3da55357.pdfIn PDF document text
    • http://azorocheat1.xyz/8567536948ldjjr.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419849/normal_6005f3dd3e681.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445555/normal_5fdd9041c6337.pdfIn PDF document text
    • https://cdn.sqhk.co/safubuguva/hjXibih/fall_starbucks_secret_menu.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/goneduzum/40891164220.pdfIn PDF document text
    • https://s3.amazonaws.com/sefukirexuwekij/bb_t_auto_loan_payoff_information.pdfIn PDF document text
    • https://s3.amazonaws.com/wupixufekijax/senoregofe.pdfIn PDF document text
    • https://s3.amazonaws.com/putelekireza/wosevigexik.pdfIn PDF document text
    • https://s3.amazonaws.com/gaxuremewuger/53330986527.pdfIn PDF document text
    • https://s3.amazonaws.com/gafedupeba/mulesedutakefusopojap.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_off0000ec1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC1B 5404 bytes
SHA-256: 09a40d7cc609c583a0afc9a088a30d0eb1c910562f47e20340560467cf5b6933
font_01_sfnt_off0000fe58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE58 10336 bytes
SHA-256: 2db91556fad84319d626c6ae8214fecd30437443fa06cefa06e1c893d2be820d

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