Malicious PDF — malware analysis report

Static analysis result for SHA-256 86fad17cb2ca7347…

MALICIOUS

PDF

92.0 KB Created: 2021-03-27 16:11:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 403cc3b8d10e2f567bf25c050629e4dc SHA-1: a50ababcf9ef475455845fd295de830c617f1cd3 SHA-256: 86fad17cb2ca734769ae16eb53fe69fcc356ffb104173cc767dc4b2c7a1de9ad
136 Risk Score

Malware Insights

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

The sample was identified as malicious by ML classifiers and ClamAV, with a high-confidence heuristic indicating an advance-fee scam lure. The document body, though heavily obfuscated, contains text fragments suggesting a download prompt. The presence of multiple external URLs, including one that appears to be a download link, indicates a likely attempt to redirect the user to a malicious payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://xezojetit.ru/wix?keyword=a+different+mirror+pdf+download
    • http://gamowenugeg.sportsontheweb.net/ukulele_songbooks_free.pdf
    • http://goldenframecollision.com/15754471514p1idb.pdf
    • http://takaweri.mywebcommunity.org/vevuzibufixofilami.pdf
    • http://fukerijinexin.mygamesonline.org/satijijinono.pdf
    • http://vizit.store/summoners_war_toah_tier_listoe2ys.pdf
    • http://andyhong.blog/kugimabeo3o46.pdf
    • http://inertbhjbj.ru/how_to_use_command_prompt_for_networkingz2afm.pdf
    • http://xilavinem.medianewsonline.com/86206281326.pdf
    • http://mscredit.info/83661312656j5v09.pdf
    • http://masajsalonunuz.com/2502264935mngoi.pdf
    • http://usmileofficial.site/2008_ford_escape_trouble_codesuties.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://pidusagi.atwebpages.com/adding_and_subtracting_algebraic_expressions_worksheets.pdf
    • https://cf4de027-7369-46c2-bf93-d69cabef2b5e.filesusr.com/ugd/868b90_54ee364cda3a444c901ce98751782003.pdf?index=true
    • http://refewebol.epizy.com/82111079719.pdf
    • http://seroritubofa.atwebpages.com/warhammer_40k_codex_space_marines.pdf
    • https://e2a3f85e-3ce8-4c76-99a2-e63219cad5ad.filesusr.com/ugd/473d25_18f9c35fd6934399a58381f14e2e4c05.pdf?index=true
    • http://dimonejoxu.rf.gd/rov_thailand_server_apk.pdf
    • http://kojenixerog.myartsonline.com/94729306214.pdf
    • https://46b09160-81f9-4cb3-9cca-f7b5b0c0229e.filesusr.com/ugd/179cc6_7e85a2ffa0bf4cf895c871ba3b3df736.pdf?index=true
    • https://cd29ef07-728f-4a0b-b57b-23e770395c36.filesusr.com/ugd/f14cf6_c647955e199a4d04914f7724a9cdd8d7.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_off00012a25.bin
872c2b01adf95f3417cd67e0f0be71269fcbaea1c71ed00470ed6d432b01e307		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12A25 5092 bytes
font_01_sfnt_off00013b70.bin
5331b42a2ec66daa1ec7362bf09bf76639f346910a88d892e00aee4a4550e0e6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13B70 11888 bytes

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