Malicious PDF — malware analysis report

Static analysis result for SHA-256 95ba8aaa8e4db6ea…

MALICIOUS

PDF

78.2 KB Created: 2021-03-17 04:47:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 308adb8db36d37e748ae3d2fc10e9c47 SHA-1: 993c5868192fe00b87f2820213e906dbf7e9bd19 SHA-256: 95ba8aaa8e4db6ea28afb9baf2fa2610aee0f756b0b4881a00b0c60f1e5f12ca
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF document exhibits multiple high-risk heuristics, including ML classification and ClamAV detection as a phishing trojan. The presence of lures related to invoices, payments, and callback phishing, combined with embedded URLs, strongly suggests a phishing or malware distribution attempt. While no scripts were explicitly extracted, the PDF structure and embedded URIs indicate a likely attempt to redirect the user to a malicious site for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://maypoin.ru/wix?keyword=limited+access+l+brands
    • http://kwini-fini.online/vilujesaxom7p4.pdf
    • http://monstergym.ru/iso_iec_15288_systems_engineering-system_life_cycle_processesk8l1a.pdf
    • http://free-at.pro/wikegaxuboz7uelr.pdf
    • http://1xbets-regs.site/296858021597e9of.pdf
    • http://buybritishcat.com/purchase_order_confirmation_form_templatecvwvz.pdf
    • https://kubasujile.weebly.com/uploads/1/3/0/7/130776158/45ea3bed80e2.pdf
    • http://sehq.xyz/facebook_app_free_for_applex2rjm.pdf
    • http://verifedform.com/67574010008uvodk.pdf
    • https://gapibuxox.weebly.com/uploads/1/3/2/6/132695643/4358312.pdf
    • https://tegupovo.weebly.com/uploads/1/3/0/7/130775278/lixawuwax.pdf
    • https://semulojera.weebly.com/uploads/1/3/2/6/132695334/gudeg-wavikapalew-fafufubopidir.pdf
    • http://uose.xyz/plot_graph_in_wordqutle.pdf
    • https://likufuzojelawaf.weebly.com/uploads/1/3/5/2/135298946/pijojibani.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/somisilegex/asphalt_8_unlimited_money_and_tokens_apk.pdf
    • https://s3.amazonaws.com/xunilukegez/zesobimapi.pdf
    • https://uploads.strikinglycdn.com/files/b7c0cdc7-e416-42b3-8056-3159eb583b4e/66563175125.pdf
    • https://s3.amazonaws.com/nademopor/how_to_setup_the_answering_machine_on_a_vtech_phone.pdf
    • https://s3.amazonaws.com/lazolu/telugu_movies_2018_tamilrockers_kgf.pdf
    • https://uploads.strikinglycdn.com/files/c91851da-fa97-4c2a-a87b-3a0f19cc9085/luseminujebevatiz.pdf
    • https://551f0ad2-75d1-4009-b90b-2f3e3e20230b.filesusr.com/ugd/c2bf0a_029b8975a04d4f24a1489fccf7bca344.pdf?index=true
    • https://uploads.strikinglycdn.com/files/d172ff63-05a9-486e-83f9-c885057b204f/helter_skelter_meaning_song.pdf
    • https://527ed197-5826-4432-9c89-449afa9d705e.filesusr.com/ugd/65ef70_30e38ce153604af986f4fb0274017938.pdf?index=true
    • https://uploads.strikinglycdn.com/files/b11b1b21-e897-48e4-8b1b-4f191e1fd8be/82269702912.pdf
    • https://535a9070-e28a-464b-adc5-c02ad08be00b.filesusr.com/ugd/9df9d6_a095bb51b62e4b61a8eea8ee8536aed4.pdf?index=true
    • https://uploads.strikinglycdn.com/files/0bfbc514-ba43-4bf5-982f-df2b66fe2420/sebon.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_off0000f0b3.bin
07ba0c937e2816a76624dbe5275982cc924e4c2cb6d8438ca9dacf076e36ad5c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF0B3 5168 bytes
font_01_sfnt_off00010225.bin
89492a20c57c9bdf7202f7e508dff43a91f48298044f60bc425afea5d4a66eba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10225 12128 bytes

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