Malicious PDF — malware analysis report

Static analysis result for SHA-256 68fd575db03dc582…

MALICIOUS

PDF

65.9 KB Created: 2020-12-16 02:05:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 69ecae962fe46d7421e584c21ee48625 SHA-1: 5c65692bba778f2acf1ec56f28d4e880d213cf08 SHA-256: 68fd575db03dc582a3e75b922710ef5150cd408accdbc4e70d00b9ed6b11dcde
254 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'traffking.ru', which is a known malicious domain. Additionally, a heuristic for a browser extension installation lure indicates a social engineering attempt to trick the user into installing potentially malicious software. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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://traffking.ru/aws?utm_term=video+calling+software++for+facebook In PDF document text
    • https://dibekojiworibo.weebly.com/uploads/1/3/1/6/131637919/demigezijevita.pdfIn PDF document text
    • https://luretazolikaxu.weebly.com/uploads/1/3/4/5/134587875/muzuxabupun_siwaxakafiw.pdfIn PDF document text
    • https://wesotapaxo.weebly.com/uploads/1/3/4/4/134488604/zadup.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/5fc586ba2bbd74065825e57e/t/5fca345eee6dcf7e363c383d/1607087203378/jetpack_joyride_free_download_for_android.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a9e9117-1764-4a41-87d8-1c5a6b0d94d3/16075894524.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc18b4cdf132613bbc250a7/t/5fcd99ba2bc7884852cfcc3b/1607309754902/consolidated_theatres_kapolei_commons.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad3af9af-284d-408d-a83c-ccb27be3e299/5930266975.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbfceb2c14dfd36feeb11ef/t/5fc387d83f75b1664341c9c6/1606649817255/fimezejupelujirero.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc6a2525bcb0228a2aa6b09/t/5fd660c4154d727871eb4d73/1607884998230/travel_poster_design_templates_free.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
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c50a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC50A 5448 bytes
SHA-256: 31d552983c8a8338386277508182281126e538325c169d43b9699f3c19019c79
font_01_sfnt_off0000d7bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7BD 10212 bytes
SHA-256: be9dea8a67b2d17ec0ea1369e3492600435a164b7afdecc939d8c3d14f86b3dc

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