Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7a0ef51a19554be…

MALICIOUS

PDF

70.2 KB Created: 2020-12-26 00:27:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 9839c1d282a5d6e545cf52299dccd6b8 SHA-1: b2f0ed8fb950fb22bac749f4bbcbdd9fa4a7ccb5 SHA-256: e7a0ef51a19554be9e516b1cf64602341e70bcae64801816b51ff2cd398f8363
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 'ggtraff.ru'. This indicates the document's primary purpose is to lure the user to a potentially harmful external site. The ML classifier and ClamAV detection further support its malicious nature, classifying it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://ggtraff.ru/123?utm_term=buck+bomb+ground+pound+review In PDF document text
    • https://cdn-cms.f-static.net/uploads/4464996/normal_5fb2ae544fa23.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411219/normal_5fe6621fc772c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411683/normal_5fa0abcc503ad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449777/normal_5fa1025f15a0b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368250/normal_5fc690ea48543.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383807/normal_5f955d6b52290.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460231/normal_5fab870e5e487.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414332/normal_5fd08a0e2c050.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448995/normal_5fac54d25e092.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/a528db9a-8d84-4314-922d-5315371a680e/24834657680.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/89e87df6-fa64-48b2-a259-fdef9364f7f4/reglas_de_los_numeros_romanos_con_ejemplos.pdfIn PDF document text
    • https://s3.amazonaws.com/fotojipifuzitul/43941910566.pdfIn PDF document text
    • https://s3.amazonaws.com/legapatatezisa/encapsulated_postscript_file_format.pdfIn PDF document text
    • https://s3.amazonaws.com/tanikanaw/analytical_skills_test_with_answers.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_off0000d374.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD374 5380 bytes
SHA-256: 95ff268605a341d99b50beecd41e179f9c04558d1975fb1c560f772ab8af176d
font_01_sfnt_off0000e5be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5BE 11168 bytes
SHA-256: c650803163fd63c539b37836338219a4bbe820bfaa5df87e277491d6324a5ada

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