Malicious PDF — malware analysis report

Static analysis result for SHA-256 0009a5b058e94eb1…

MALICIOUS

PDF

74.9 KB Created: 2021-02-12 03:05:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f8c691f1a72a0bc9c046d8670e526b6d SHA-1: d6d5bad48a02112cdef4a053f7c329e8c810a260 SHA-256: 0009a5b058e94eb13b34840ead94495f38c54664fde8e7857d83549e4e130511
104 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. The document body, though heavily obfuscated, contains text related to a 'license request failed' error, which, combined with the 'SE_DOWNLOAD_BUTTON' heuristic, suggests a social engineering lure. The embedded URL likely hosts the malicious payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/wix?keyword=license+request+failed+for+feature+pro+e+200
    • https://static.s123-cdn-static.com/uploads/4410441/normal_5fee8514aa19a.pdf
    • https://static.s123-cdn-static.com/uploads/4366034/normal_5ff9bf1163430.pdf
    • https://lutaxebibutemun.weebly.com/uploads/1/3/1/3/131380730/lifutumipin-kilemewebedetad.pdf
    • https://cdn-cms.f-static.net/uploads/4383930/normal_60145c1842387.pdf
    • https://cdn.sqhk.co/kewesowovim/gigK4gf/rally_championship_1996.pdf
    • https://cdn-cms.f-static.net/uploads/4465394/normal_601cdf3f1fa73.pdf
    • http://datab.vip/tusigewegobotitozupqmt47.pdf
    • https://cdn-cms.f-static.net/uploads/4426971/normal_60195866d414a.pdf
    • http://arfesopt.com/desierto_informacion_en_inglesjlmuf.pdf
    • http://lozhobelir.space/ksa_film_indir5qhu3.pdf
    • https://tevupuzenoxa.weebly.com/uploads/1/3/6/0/136009769/9868710.pdf
    • https://cdn.sqhk.co/bimepefav/IghxCig/1135835656.pdf
    • https://cdn-cms.f-static.net/uploads/4372707/normal_6025cb05a3a9b.pdf
    • http://bigchance.pw/steamer_for_clothes_costco8jgow.pdf
    • https://static.s123-cdn-static.com/uploads/4455387/normal_5fcab0c2beaa7.pdf
    • https://static.s123-cdn-static.com/uploads/4405930/normal_5fe0653400933.pdf
    • https://cdn.sqhk.co/xewazezikufi/fhhvnbI/facebook_inc_stock_symbol.pdf
    • https://cdn.sqhk.co/zetobazox/dkhjKSz/madalin_cars_2_run_3.pdf
    • https://nusewumu.weebly.com/uploads/1/3/2/7/132740482/nujajowu.pdf
    • http://kmplitka.shop/fly_sheet_booktid9o.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/farezelof/call-_out_titles_after_effects_free_template.pdf
    • https://s3.amazonaws.com/petubapizo/komapusitunafasumifeni.pdf
    • https://s3.amazonaws.com/dofufiri/67038989255.pdf
    • https://s3.amazonaws.com/jedaxopopuko/indivisible_game_trophy_guide.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dc57.bin
7d290e209273c08384370ae20294d214ef167766896379e725f0e0836818dd84		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDC57 5488 bytes
font_01_sfnt_off0000ef19.bin
94a9ab48ff8575979a1d4cd6e7c8ccaf9eb8b20df767b27c861616abc6baf9f2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEF19 14768 bytes

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