Malicious PDF — malware analysis report

Static analysis result for SHA-256 abf8fb7537be42ab…

MALICIOUS

PDF

77.8 KB Created: 2021-03-01 11:55:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 32434c2e6274dfe11cd8617da7b59ada SHA-1: 0ef0414b6df7d7e2293b5f22f98c4d5bd2d4d75e SHA-256: abf8fb7537be42abe942a35f3ff823f4b3fc9ae29bab2494629935b0b6a9276e
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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://crophysi.ru/123?utm_term=can+you+reprogram+a+fire+stick+remote PDF link annotation
    • http://firstflirts.site/primer_grado_lecturasx5i9k.pdfIn PDF document text
    • https://cdn.sqhk.co/nuduniguwufo/lidheDg/angry_birds_2_cheats_tower_of_fortune.pdfIn PDF document text
    • https://cdn.sqhk.co/dapumexader/5jfjcge/sewal.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367301/normal_6038c65b1c66a.pdfIn PDF document text
    • https://cdn.sqhk.co/bavomizobe/hYzhghi/80857420441.pdfIn PDF document text
    • http://zumbayuliya.online/consumer_journey_powerpoint_templatej99rh.pdfIn PDF document text
    • http://vezerfa.xyz/dexezapedulkyim.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416921/normal_5fc8828d3950e.pdfIn PDF document text
    • http://vandify.com/dolufukibevuxeguludasiwaf3lwcm.pdfIn PDF document text
    • https://cdn.sqhk.co/sobupepokor/ehcWFMM/hashtags_on_instagram_to_get_likes_and_followers.pdfIn PDF document text
    • http://cuzinfo.ru/88675037686nu7gu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444850/normal_5ffb716a1a0ee.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/dikomavomem/93771732540.pdfIn PDF document text
    • https://s3.amazonaws.com/putelekireza/free_radio_broadcast_software_to.pdfIn PDF document text
    • https://s3.amazonaws.com/tigewibejageju/66785897196.pdfIn PDF document text
    • https://s3.amazonaws.com/jexijer/video_editor_android_application.pdfIn PDF document text
    • https://s3.amazonaws.com/sojenozap/58052000244.pdfIn PDF document text
    • https://s3.amazonaws.com/suxuzubojut/152622456.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_off0000f39c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF39C 5372 bytes
SHA-256: 53f93d88de718b58fc5f03f2cc57328e9378fa70db82af85872a77ba003fecf8
font_01_sfnt_off000105e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105E7 10660 bytes
SHA-256: 990be0f2e604421a11629d7989f263dddb2c81278d641be0da2bb2eb149d3250

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