Malicious PDF — malware analysis report

Static analysis result for SHA-256 6deab19ee25a232e…

MALICIOUS

PDF

84.3 KB Created: 2020-12-02 00:00:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: eac3b507d3ae04cca87e910984262f6f SHA-1: 95c71058a53581505b06a5a7538622389838953f SHA-256: 6deab19ee25a232e0c25f423ffeab0720b610e6a7bb1eee5464b47cc9fea6d47
222 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 embeds a large number of external links characteristic of an SEO link farm, routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 6

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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
  • 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://traffmen.ru/aws?utm_term=amnesia+love+story+apk In PDF document text
    • https://negapisege.weebly.com/uploads/1/3/4/6/134635707/gojebo_revuga_gukamaxojobirix.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457318/normal_5fa89a1125e07.pdfIn PDF document text
    • https://lakizixobatit.weebly.com/uploads/1/3/4/3/134325667/vikubinakedowugam.pdfIn PDF document text
    • https://nefositasin.weebly.com/uploads/1/3/4/3/134310380/48e3222.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470830/normal_5fb96bb0bff2b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379960/normal_5fc31b4e799b5.pdfIn PDF document text
    • https://pupazugosabi.weebly.com/uploads/1/3/4/8/134868946/modosasulinolixolini.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc56c853398ff75154c3188/t/5fc6bcf79dfc2a4045074c79/1606860023778/strategic_plan_approach.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd027f45ca4f790266f974/1606222463994/miller_and_levine_biology_download.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf59e12dd96f5918e60aae/1606375906344/honda_mower_manual_hrr216.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e99a0a2757459be2ef6a/t/5fc1bb2abc819f1cf41948f1/1606531889247/turewafupuwibotasul.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc38de88787e879897caab0/t/5fc44182a97599144e7f81c0/1606697347103/nalabijizaneduzopax.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe1f9d1972c46e3c67f2c0/1606295454503/mifune_soul_eater.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcf5486a371610b876cd07/1606219087309/kingoroot_apk_latest_version_7.1.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf590c173fb5383b997747/1606375692387/lejegabatubalufivujaxu.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe227008845d0924536256/1606296177173/52299771559.pdfIn 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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d29f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD29F 6588 bytes
SHA-256: b3260a8b27c40a1c9408c40b3dcfb9ec9ded560232013cbc1ca8de37ebb5a831
font_01_sfnt_off0000e319.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE319 5180 bytes
SHA-256: 107779a047596c7947613839c88a24a6f4bf66d7b06145b5d253fb58afbf3ba7
font_02_sfnt_off0000f4a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4A5 5348 bytes
SHA-256: 28bf3d42435881429581a62c258897314600cd846b31f744b6e0edf2620fb622
font_03_sfnt_off0001085a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1085A 10740 bytes
SHA-256: 5901e38aacc567056d5c46fbee2977f9d9211d5b8f5955ba532f841342e0397d
font_04_sfnt_off00012c14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12C14 16136 bytes
SHA-256: 02868b95a37f5056ec4234e800ee5d18a27dff281ed5c1a6f68aa4dbf0c9c806

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