Malicious PDF — malware analysis report

Static analysis result for SHA-256 f00c79c6395d2a29…

MALICIOUS

PDF

76.5 KB Created: 2021-01-12 20:58:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 8eeb98480341c2f630c585955bed01ec SHA-1: 89502274d82e8a620a81f918c654308434d41b48 SHA-256: f00c79c6395d2a29c563c048c3a4e7c41cb85854420a0f2e2eb08d10e606e8ae
222 Risk Score

Malware Insights

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

The PDF file contains numerous links to external PDF documents, suggesting a link farm designed to attract traffic or distribute malicious content. One critical heuristic identified a link to known malicious redirector infrastructure, specifically 'https://cctraff.ru/wb?keyword=free%20download%20poker%20texas%20holdem%20for%20pc', which is likely part of a phishing or malware distribution scheme. The presence of a 'download button' heuristic further supports the lure-based attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://cctraff.ru/wb?keyword=free%20download%20poker%20texas%20holdem%20for%20pc In PDF document text
    • https://kozenuxifojani.weebly.com/uploads/1/3/4/6/134665776/kenuje_gewefejamutosi_kofem.pdfIn PDF document text
    • https://wezinifagewugi.weebly.com/uploads/1/3/2/8/132815004/3931531.pdfIn PDF document text
    • https://tamagokevalagir.weebly.com/uploads/1/3/0/7/130776783/3815b322ff.pdfIn PDF document text
    • https://site-1168463.mozfiles.com/files/1168463/resifexilelelomomom.pdfIn PDF document text
    • https://site-1200721.mozfiles.com/files/1200721/tokugagaw.pdfIn PDF document text
    • https://losujawidejope.weebly.com/uploads/1/3/4/3/134310111/9803144.pdfIn PDF document text
    • https://gasatuba.weebly.com/uploads/1/3/4/5/134596028/87b6d9008a5da.pdfIn PDF document text
    • https://nutefowamedez.weebly.com/uploads/1/3/4/3/134330341/a5bf877bea23.pdfIn PDF document text
    • https://site-1205734.mozfiles.com/files/1205734/granny_mod_menu_apk_download_android_1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zarusegibitumet/remind_me_app_download_for_windows_7.pdfIn PDF document text
    • https://s3.amazonaws.com/dadupawo/hanuman_and_mahiravana_game.pdfIn PDF document text
    • https://s3.amazonaws.com/nigimul/nipeluzuliz.pdfIn PDF document text
    • https://s3.amazonaws.com/jezaxojipevu/half_marathons_in_florida_january_2020.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d663.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD663 5572 bytes
SHA-256: 6d67fb010c0e32d92dcbab757f814e5edf662cf3cc86c2a84243c50f2c46092b
font_01_sfnt_off0000e94c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE94C 11732 bytes
SHA-256: 80b73e5e003840ce88de9cc465c73e2ca677f16f1b253f27a9ad35a25dc7a98e
font_02_sfnt_off00011042.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11042 16068 bytes
SHA-256: 12bdfdd26b42687ed6d6e4673084773943fc64d80ea302008a05158b1f99f3df

Open this report in the interactive analyzer, or submit your own file for analysis.