Malicious PDF — malware analysis report

Static analysis result for SHA-256 5fe6ddbbe4a91a27…

MALICIOUS

PDF

67.9 KB Created: 2020-11-30 12:21:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 454d586f5156db4a6c9f091951b6f9a6 SHA-1: 14e3a3ef665c1bd0db0ac1ae0cb8598a45a53835 SHA-256: 5fe6ddbbe4a91a27b7d61c59684a8496bf4e913177fb596850663e1eedc58a77
214 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one identified as a malicious redirector. The ML classifier and ClamAV detection strongly indicate malicious intent. The presence of numerous external links suggests an attempt to direct users to potentially harmful content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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=greek+alphabet+handwriting+pdf In PDF document text
    • https://wepusiviji.weebly.com/uploads/1/3/4/6/134661614/firoxuxowit.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416512/normal_5f98d820cab03.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/5fc0dda511f6a41984857aa8/t/5fc49c09fa04221c71b26fd5/1606720524546/jensen_tv_operation_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/fujadabez/kids_n_us_megaflora.pdfIn PDF document text
    • https://s3.amazonaws.com/warapagefasovi/82636998329.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbfd1e0c89e1c4b8fb81223/t/5fc1913bbc819f1cf4140939/1606521151862/vinipupisirufavesejenan.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf49337acac6192ab6cf2f/1606371636514/14206019971.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd10a44f07da69d6416e3d/1606226084732/fantasy_ninja_sword.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0c42727a199023ab4a3d3/t/5fc10cafe18c5c478e20f178/1606487215959/how_much_to_charge_to_remove_popcorn_ceiling.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbfd56316f6d44b07b8b81c/t/5fc0ec5761e25426e159b31c/1606478937675/abc_property_management_llc.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0d67b8ef7301f8b106140/t/5fc44380cb3e0f5771d758e9/1606697857012/gumetijelurogulole.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0ec955687f52b6b8145c1/t/5fc164dff81c9a2a0cd67c6c/1606509793801/spongebob_tickler_apk.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd3eaa0d5fd03cbc5b256e/1606237867821/clash_of_clans_air_troops_strategy.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_off0000cc05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC05 5452 bytes
SHA-256: 3ccd6e14e96bde38c75b431fecc9ebb2101acfd526fb59bf5b741d877e65fd7f
font_01_sfnt_off0000dea1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEA1 10592 bytes
SHA-256: c38e0ad31b64b3d2909f037702a835363c96b911ea03ee881f391ba27b3d4ea2

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