Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e01e094945e5a6f…

MALICIOUS

PDF

66.2 KB Created: 2020-12-24 04:23:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: d8713407cd860bc40ece9f7145ff401f SHA-1: 6ebb81e4478d473550881ee9263fe71d0e5e0b35 SHA-256: 1e01e094945e5a6f54ecc32f60d8c970eea055331b64a31a3612584d8239242a
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to `https://gettraff.ru/123?utm_term=the+wok+shop+seasoning`. This URL is likely used to redirect the user to a phishing or malware distribution site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the presence of a malicious URL in a PDF document strongly suggests a phishing or social engineering attack.

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://gettraff.ru/123?utm_term=the+wok+shop+seasoning In PDF document text
    • https://cdn-cms.f-static.net/uploads/4390071/normal_5f8fcb8a5639f.pdfIn PDF document text
    • https://cdn.sqhk.co/kalijada/R061ENk/ball_into_washing_machine.pdfIn PDF document text
    • https://cdn.sqhk.co/pupevadojas/hdBjjif/gif_to_video_app_apk.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/gopuze/handshake_problem_ppt.pdfIn PDF document text
    • https://s3.amazonaws.com/matogapibelifiv/rakuremugusireg.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/vufojutujuso.pdfIn PDF document text
    • https://s3.amazonaws.com/leributafa/wow_vanilla_cooking_leveling_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/226219d4-77f3-476a-954a-167c2cb04d1d/68645841337.pdfIn PDF document text
    • https://s3.amazonaws.com/lebaxa/normal_biodata_format.pdfIn PDF document text
    • https://s3.amazonaws.com/gavexilatuvitaz/firefox_esr_52._9_windows.pdfIn PDF document text
    • https://s3.amazonaws.com/wovugi/15267575850.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_off0000c8dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8DD 5056 bytes
SHA-256: a05a22028c4e44eda9fb86ec7a2cd8da35d77cd7753ac499ace40719ff7378ba
font_01_sfnt_off0000da28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA28 10072 bytes
SHA-256: 499f519253c13b696a8d6df27feab7dc86d512b18b88b05fb09856c3d7700ee3