Malicious PDF — malware analysis report

Static analysis result for SHA-256 f79af2e1f8bcbccd…

MALICIOUS

PDF

153.0 KB Created: 2021-04-05 09:10:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 2eac9d06a85788319cfbd64055589e61 SHA-1: 13a9d42e7a25be9009da0ac07537d95d0922fdda SHA-256: f79af2e1f8bcbccddd7e6ec48baf60325e9385dc131a6dd0a6eb7fa3e154207f
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://yafferge.ru/aws?utm_term=this+blessed+house+jhumpa+lahiri+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4452612/normal_6054353361fd0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384301/normal_603e79337fe07.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374188/normal_5ff829057327b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486778/normal_5fd19d978bdc4.pdfIn PDF document text
    • http://beviluxenumiliv.mywebcommunity.org/zamul.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/tarajix/bandwidth_actual_speeds.pdfIn PDF document text
    • https://s3.amazonaws.com/livivuvuwugeb/dufizakotitozupafesop.pdfIn PDF document text
    • https://s3.amazonaws.com/fejififimaketo/sarifowet.pdfIn PDF document text
    • https://9177b9cb-4c70-42bd-a9e0-27a1bf53b67b.filesusr.com/ugd/9baf76_64eb691f76aa49699c8f48c59ac08a9f.pdf?index=trueIn PDF document text
    • https://a2ae8793-a99f-480d-a3bc-849ef63d34f7.filesusr.com/ugd/cc207a_4d3427067b1e42ffadcaca7a21014f01.pdf?index=trueIn PDF document text
    • https://7e079b21-6cfc-4bbc-a8af-001f4930a7f2.filesusr.com/ugd/f66805_84c9f6fcb094447695857da675b14afc.pdf?index=trueIn PDF document text
    • https://88966db1-4a83-4446-b941-f65022a6235f.filesusr.com/ugd/928e0f_7d763b4bdf514b9e9256653ec4b53812.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zafijukopa/xanekomawu.pdfIn PDF document text
    • https://s3.amazonaws.com/vaxebisapesi/mlab_android_tv_box_uhd_4k.pdfIn PDF document text
    • https://s3.amazonaws.com/sowirutelevolur/3699965355.pdfIn PDF document text
    • https://92e0cadd-ca3c-497d-ba7d-1aece6ee6da0.filesusr.com/ugd/008e52_679b089485e149be92c9fb922006835a.pdf?index=trueIn PDF document text
    • http://tameladizikep.atwebpages.com/nimafujogo.pdfIn PDF document text
    • https://s3.amazonaws.com/tanikanaw/sig_sauer_p229_enhanced_elite_ca_compliant.pdfIn PDF document text
    • https://s3.amazonaws.com/zuwimadaneb/how_to_set_alarm_on_onn_clock_radio.pdfIn PDF document text
    • https://f72b89be-0fa6-41ee-8162-331329ef78ce.filesusr.com/ugd/95089d_3aaef8fe8a5e496da65dfeb182d428c3.pdf?index=trueIn PDF document text
    • https://b9a4c3d6-4ccf-4d04-9b0f-c2e9c357e15d.filesusr.com/ugd/e5cbe5_7675ceaf7c354640a08e3b3b0eb17042.pdf?index=trueIn PDF document text
    • https://5a995288-ce6f-4ae3-a3e6-14272d8003db.filesusr.com/ugd/7be1cd_721d55337f6a4cc9be682c1b55eac403.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/rawesaragegugar/nespresso_aeroccino_3_milk_frother_instructions.pdfIn PDF document text
    • https://7e005a1c-fb68-43c1-af83-b854b6a2d282.filesusr.com/ugd/dcfb95_8b2d58c452a946d3bcf5c68b8b49c486.pdf?index=trueIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00021111.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x21111 5144 bytes
SHA-256: 1fb02a01fef45270b631c05e1d24d9c5969cc4d6863aa775c73ed40ce770679a
font_01_sfnt_off00022275.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x22275 10772 bytes
SHA-256: eb98b376e8c3f3d3d4a1bb519e2cb0bfc8d99f4da9faf1ded303dacbc2b0982a
font_02_sfnt_off0002474d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2474D 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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