Malicious PDF — malware analysis report

Static analysis result for SHA-256 0954c19067a8921e…

MALICIOUS

PDF

81.8 KB Created: 2021-03-23 16:14:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fba2ea83be32020bc26a10fc713b2452 SHA-1: 7efe3fd2200cc2654370a7f375a6b7b9c0c52b42 SHA-256: 0954c19067a8921ef72ec06a4d7a36f76a964d3122c60a7206b18463abc043b9
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a URL that promises a free download of a popular book, which is a common lure for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to malicious content, likely for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://dafemum.ru/award?keyword=wheel+of+time+book+1+pdf+free+download
    • https://static.s123-cdn-static.com/uploads/4372371/normal_600680e849cec.pdf
    • http://electrumwallet.buzz/partnership_agreement_template_uk_doc3k6me.pdf
    • https://cdn-cms.f-static.net/uploads/4393220/normal_600a05ef191c3.pdf
    • http://reduslim-officialsite.site/wuxafuuf4so.pdf
    • http://hrushch.space/16429193346i3wd.pdf
    • http://bilkan.fun/clash_of_clans_hack_botegpz5.pdf
    • http://gufutaca5.xyz/pavanuzxlhv.pdf
    • http://busforpay.online/19518979483j1mze.pdf
    • https://cdn-cms.f-static.net/uploads/4367312/normal_6038d01339b34.pdf
    • https://cdn-cms.f-static.net/uploads/4447631/normal_5fd71944b6e77.pdf
    • https://cdn-cms.f-static.net/uploads/4478685/normal_600c7e4890c68.pdf
    • https://static.s123-cdn-static.com/uploads/4387709/normal_5fe5647a3e419.pdf
    • http://jakartapro.xyz/tekuwutodisog3gqke.pdf
    • http://straponartist.com/what_is_a_severe_rainstorm_called8m30z.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cd29ef07-728f-4a0b-b57b-23e770395c36.filesusr.com/ugd/f14cf6_1341448334194759afd87bccdbc67599.pdf?index=true
    • https://332892e0-6a2b-40ad-946e-e7c92c61c867.filesusr.com/ugd/3e5d97_8a8ee3f0b49d4499a80e1627d520444b.pdf?index=true
    • https://s3.amazonaws.com/zedilegol/air_and_noise_pollution_control.pdf
    • https://c07b3cb0-7d4a-4e65-9c62-eb3bd0ce3b6b.filesusr.com/ugd/7560d5_23d897ff754b48e6b65206481a8887e9.pdf?index=true
    • https://6363ce23-9394-4102-a476-7be320345719.filesusr.com/ugd/7c41c1_7985432cdc53482494f902c09491494f.pdf?index=true
    • https://s3.amazonaws.com/sowewazulejewi/voriwidebe.pdf
    • https://s3.amazonaws.com/zafaronivaj/ios_12._4_for_iphone_5s.pdf
    • https://s3.amazonaws.com/tadevewuju/bumafalinoruzapewik.pdf
    • https://s3.amazonaws.com/divelatoxa/lomivililuw.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f281.bin
82743bb33bd696d31d571d421e39750a871d9a2c677dfb5d70b25e0229b1c9a4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF281 5252 bytes
font_01_sfnt_off00010443.bin
3058737768df810d2c58e504610a7bce3776e3e13037bbc4a5e5cda8ff3c3341		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10443 11416 bytes
font_02_sfnt_off00012b1d.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12B1D 4324 bytes

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