Malicious PDF — malware analysis report

Static analysis result for SHA-256 8cd4d515362e7f0c…

MALICIOUS

PDF

330.7 KB Created: 2021-03-22 22:29:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2ea3d67a1230902baf7a57f3126510a1 SHA-1: 2fde3d4d7ae61a4e9c7b75dde9fddb60d8869b65 SHA-256: 8cd4d515362e7f0cab2743b2489c9e9e4bd1034f995d890f07e1a91b5a0967d6
136 Risk Score

Malware Insights

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

This PDF file was flagged by ClamAV as a phishing trojan and exhibits characteristics of an advance-fee scam. It contains an embedded URL that likely leads to a malicious payload or phishing page. The document body, though heavily obfuscated, suggests a lure related to a prize or lottery requiring parcel delivery, a common tactic in advance-fee fraud.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9838

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
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://mezovuduw.ru/wix?keyword=sea+of+monsters+pdf+online
    • http://excschool.ru/sistema_muscular_humano_completozx5p5.pdf
    • http://myfoxing.online/sirusubegenazowerirlk0h9.pdf
    • https://static.s123-cdn-static.com/uploads/4375088/normal_60078a97a83eb.pdf
    • https://static.s123-cdn-static.com/uploads/4403823/normal_5fef45cdac4e9.pdf
    • http://wobokegidutijem.iblogger.org/what_two_countries_border_north_korea.pdf
    • http://wusodopepufex.66ghz.com/fetimaxoxawarevajaz.pdf
    • http://kipededevidabun.iblogger.org/can_i_use_5w30_oil_in_my_snowblower.pdf
    • http://konujojijitezu.iblogger.org/runisibotupamabulever.pdf
    • https://cdn-cms.f-static.net/uploads/4416653/normal_60555c00301a3.pdf
    • https://cdn-cms.f-static.net/uploads/4446790/normal_60588522b2418.pdf
    • http://spainsale.pro/meaning_of_visual_culturesrjgx.pdf
    • https://static.s123-cdn-static.com/uploads/4450636/normal_5ff06c0413353.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://be9c8297-50e9-4ec8-be22-7cc4068ef96a.filesusr.com/ugd/fc3b0b_aec9e37d602d420fad3e80e40c6185f9.pdf?index=true
    • http://wukerakowevomu.epizy.com/clash_of_clans_private_server_pc.pdf
    • https://97d49ff2-d914-4ae4-8ac8-5e5cf5f77cad.filesusr.com/ugd/6350c7_c4a7192704d14ab0b32127cf6c4cca6e.pdf?index=true
    • https://s3.amazonaws.com/julaxel/gakovotisizelepusemi.pdf
    • https://uploads.strikinglycdn.com/files/ac593f38-15ba-4613-a2e9-59a39ab77c3e/towugotemefuwu.pdf
    • https://c580675e-8888-491d-8c80-3106eaac86fb.filesusr.com/ugd/c8a981_cebffe7179764c22b6b73fe74dcf1e57.pdf?index=true
    • https://s3.amazonaws.com/kudufigunabi/micro_center_return_policy_restocking_fee.pdf
    • https://uploads.strikinglycdn.com/files/e883abf3-a4d8-4f71-a9da-6424dc60c615/diana_gabaldon_outlander_quotes.pdf
    • https://c216880a-03a2-4774-ab7e-121c93799e8f.filesusr.com/ugd/b5aed9_32f6151c24684b1c9388543fdbda42ad.pdf?index=true
    • https://s3.amazonaws.com/xeponodij/foreign_body_aspiration_pediatrics_guideline.pdf
    • https://19aaccd0-9772-41b6-85c4-be118606641a.filesusr.com/ugd/a12125_58f769c88ce540d190e4429014713bcf.pdf?index=true
    • 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_off0004e1e9.bin
58b9903756e26d48d0c981b4b9d6e18f3849b341afe1b0057cbd9e4e58449cfe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4E1E9 5292 bytes
font_01_sfnt_off0004f3d5.bin
d5953013ef4db794397048bdd935a5a5ec849eeaa15ad9ea57e3f1ac615f4255		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4F3D5 12176 bytes

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