Malicious PDF — malware analysis report

Static analysis result for SHA-256 a774a386ab76350a…

MALICIOUS

PDF

80.9 KB Created: 2020-12-24 16:07:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 4f1f1d53c03e42987c87db4732828ec1 SHA-1: e7bbae8c45c48112ab2c97d032b0a1a865dcc39a SHA-256: a774a386ab76350ab8af1d2d49094cca1874cf02f80de2e5675dc19a6f5ddc05
154 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a phishing or trojan threat. It contains a link to a known malicious redirector URL, ggtraff.ru, which is likely used to funnel victims to a malicious site. The document body, though heavily obfuscated, contains text related to location searches, suggesting a lure to trick users into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://ggtraff.ru/123?utm_term=pai+iso+locations+near+me In PDF document text
    • https://static.s123-cdn-static.com/uploads/4491671/normal_5fc75e56e23b9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383445/normal_5fb6dc969ce17.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456116/normal_5fe0d03a7a260.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444092/normal_5fdb30cbd6ae5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383916/normal_5f8c731bc9b10.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393345/normal_5f947eb316796.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/14ef2aaf-b1d8-4d44-9a5b-aeb263cf906e/gezoxixorosasumazisutu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d37c293a-2e0e-423a-b493-b7bb5bfeb7c5/49283940588.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a54fb561-97ff-4899-ac7d-a14322de73bc/xufiresure.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e4c239f0-b90e-4fb5-b4b5-feb71094585d/molusizuz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8c0935f9-b63e-45aa-aa3d-85a5157f2a23/fakaraxukosu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aab2cbc8-40fa-4ab4-93ce-12fa296198a2/crud_matrix_definition.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0aafb526-6b04-47d1-9e44-e283c21942df/types_of_consonants_in_kannada.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/47306ff5-f2c6-4312-ad4b-612cc0a03f88/86771131493.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/81fa83e6-a34d-4cc6-8768-ce6c943b856a/rabananipimiku.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e47d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE47D 3716 bytes
SHA-256: 0a23d65181f0da6ff3ba131447ed3d0c86bb4e21a24f33d87bbc5c323f9eb91a
font_01_sfnt_off0000f1a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1A4 4736 bytes
SHA-256: 1a308a73dec85fae0c6cfe32af7894404a936cd5b7c4c9ee9ea9a3ea34bc6b3b
font_02_sfnt_off0001018b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1018B 11604 bytes
SHA-256: d59c424c6c2426801cae4436585ff7367f8aede000d20b7c82769f68ec65df0b
font_03_sfnt_off000127b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x127B6 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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