Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a2866a51765128b…

MALICIOUS

PDF

76.2 KB Created: 2021-01-11 23:20:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 05abcbf5994f804bd17b9dec6de29097 SHA-1: 72732b8ecb4b4f30f58088b5865220b37157daec SHA-256: 4a2866a51765128b0ab337199767224d80522c0373496cf34d22bafc30be8ade
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/aws?utm_term=meri+pyari+behna+song++pagalworld'. The ML classifier also strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the nature of the redirector suggests an attempt to lure the user to a malicious site, likely for phishing or to download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9899

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/aws?utm_term=meri+pyari+behna+song++pagalworld In PDF document text
    • https://cdn-cms.f-static.net/uploads/4413474/normal_5fd7abea688b5.pdfIn PDF document text
    • https://finazodaxuvoj.weebly.com/uploads/1/3/2/6/132682535/kejigalirilomus.pdfIn PDF document text
    • https://site-1167953.mozfiles.com/files/1167953/jasewikotakaxodezaro.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366947/normal_5f8a4a8d2243f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://s3.amazonaws.com/gajakelegeza/sawejopilupigumi.pdfIn PDF document text
    • https://s3.amazonaws.com/panalipolifod/60006516505.pdfIn PDF document text
    • https://s3.amazonaws.com/pusolefosex/nojovalukejiber.pdfIn PDF document text
    • https://s3.amazonaws.com/fizaxo/outlook_mobile_out_of_office_android.pdfIn PDF document text
    • https://s3.amazonaws.com/sesafefanulokam/tirukokedofalerenar.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bd4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD4A 5560 bytes
SHA-256: b592f1502a8aa7b0f43a5c929d05f4e9bc79c10e413e3d8ac9ca9988c0b6d387
font_01_sfnt_off0000d03f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD03F 1884 bytes
SHA-256: f5a3e0886b95c9b467f99b5e94d28133f575fbf2270330b68ad91cfe8bde1cf1
font_02_sfnt_off0000d95d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD95D 11916 bytes
SHA-256: 95511264e378fc89bfecb0f9545085d2fe3be66dd46789c834f57a9fb1865c98
font_03_sfnt_off0000ffc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFC7 16336 bytes
SHA-256: e18572c2178d0e9b93807c4dd948cedf5490e99f5575d383780ea94cea0324c6
font_04_sfnt_off000115ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115AD 3616 bytes
SHA-256: 3604de5d025f39adce0c116b6a18e00b0fdb033a76ed4d8c05b089b858385b89

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