Malicious PDF — malware analysis report

Static analysis result for SHA-256 3593124519d7af11…

MALICIOUS

PDF

68.1 KB Created: 2021-01-01 06:27:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: b6a687fb9b52c534ebfc7d4ecf5f341e SHA-1: 0c2dd7c5e9135833df90286912a5cc6d9ac7b87e SHA-256: 3593124519d7af1123c030bc2b36b2c13c24b47f612f8388406761c8be373892
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'traffmen.ru'. This indicates an attempt to direct the user to a malicious site, likely for phishing or malware distribution. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the presence of the malicious URL is sufficient evidence of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://traffmen.ru/123?utm_term=club+penguin+secrets In PDF document text
    • https://cdn-cms.f-static.net/uploads/4486034/normal_5fa982f2265c8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389101/normal_5f927e1e4cac0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459788/normal_5feb7c59b151c.pdfIn PDF document text
    • https://cdn.sqhk.co/sisadenev/P8GkjgS/crowd_talking_sound_effect_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366027/normal_5fe26de495700.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378856/normal_5f8faa8dcdcf6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/fee22cd3-7521-43c0-8f7d-30570b77ac1e/bazeg.pdfIn PDF document text
    • https://s3.amazonaws.com/tixedujegibex/mailchimp_template_full_width.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dcb3f251-8fa7-465f-a916-e33002657b77/fugaguvunaguwuje.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a367a3e-4d38-491a-ab0d-6f82a4619500/soulsilver_safari_zone_days_trick.pdfIn PDF document text
    • https://s3.amazonaws.com/mejifavo/nfc_amiibo_using_android.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7649ba2c-467d-4dff-a97c-556bbac43331/chakravyuh_2012_movie_480p.pdfIn PDF document text
    • https://s3.amazonaws.com/tinajabizoreguf/english_font_style_ttf.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

Related samples 3

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cee6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEE6 4936 bytes
SHA-256: 5ecc74c612879fb6e8693f4c9a784b713af20e2b64caff5d7dbda39ce187e7dc
font_01_sfnt_off0000dfc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFC3 10684 bytes
SHA-256: 558c9cf7ed05417b20188c77b5165c409e67ab67ec6170206c78242153bf20d3

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