Malicious PDF — malware analysis report

Static analysis result for SHA-256 76117368cc22f2c9…

MALICIOUS

PDF

70.0 KB Created: 2020-11-19 15:16:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 372184f138debf3cf3baee9daf4c7766 SHA-1: bb3468c6c4cf6b7efbec93e820fd89d48b2182ff SHA-256: 76117368cc22f2c98fedcfec5371f2c5c71818e272007b0f948bc5530a05c745
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://traffking.ru/123?utm_term=scott+stamp+catalog+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4379618/normal_5f8bafd917df0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401540/normal_5f9b32dcb2eb1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445869/normal_5faf2733326f5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365639/normal_5f97d09bd4e05.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372721/normal_5f8a9602363f1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369765/normal_5f8b77f55c4a1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421944/normal_5f99b64937726.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368479/normal_5f9dafec62fad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422145/normal_5fa01f21950f1.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/54a21046-ac56-4537-ba2c-2568ea64c30e/95091829947.pdfIn PDF document text
    • https://s3.amazonaws.com/faluzotixupi/bust_the_windows_out_your_car_chicken.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a08b0f7-1c1f-4342-a47e-e245ea3c5fa3/25914077828.pdfIn PDF document text
    • https://s3.amazonaws.com/mesixadelomomo/skf_bearing_book_download.pdfIn PDF document text
    • https://s3.amazonaws.com/jesidofefe/82432640223.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c2b5b2dc-95c2-402e-893c-0748eeb07849/the_crucible_act_2_activities.pdfIn PDF document text
    • https://s3.amazonaws.com/divikufifir/nccu_final_exam_schedule_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/dedinavesute/hannah_arendt_truth_and_politics.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c8b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8B5 5000 bytes
SHA-256: d3b6c490355ddb29b84eea29adecd29474331caab782b33c301211b6e139c0ae
font_01_sfnt_off0000d9b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9B6 10412 bytes
SHA-256: e7e902270f7d1575a37287540dba7b682ef1934614693acd063aae4c65fe86ff
font_02_sfnt_off0000fd40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD40 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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