Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c2ff35a05b9714d…

MALICIOUS

PDF

77.0 KB Created: 2020-12-22 11:05:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: e67220126ffee942a036563864f6618a SHA-1: 49020da01834933bd51fa7a2fb8d57b48d2bd110 SHA-256: 5c2ff35a05b9714de5a1ebf9430568aad879f8b58f970e25c71cdd2deefaa790
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is a PDF document detected as malicious by ClamAV and an ML classifier. It contains an embedded URL pointing to 'traffine.ru', which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, contains text related to 'Hobby lobby online customer service', suggesting a pretext for the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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://traffine.ru/strik?utm_term=hobby+lobby+online+customer+service PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4479435/normal_5fd9d70cb92d7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc78ba439503a47f6fe0002/t/5fc93ed4a7ebcb205c2d6b7c/1607024340822/bloons_super_monkey_2_apk_mod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/727adafc-7e8c-46cb-9a2d-14e80089a0b7/60892026493.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b36caa5f-eadd-4957-bfd8-a4b11a1333cb/japilore.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc652a0085bf90c0e221d2d/t/5fd7265689566e781f68481e/1607935577871/doribolitozixi.pdfIn PDF document text
    • https://s3.amazonaws.com/vibove/prayer_request_form.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/37f58726-0ab7-4f05-be8c-d641e79b36b2/la_compuerta_numero_12.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0793b259-8913-4337-b301-4e2ab7bc399c/jovum.pdfIn PDF document text
    • https://s3.amazonaws.com/dojivewobasuval/lofidisasamaz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/815071df-693a-4aa6-8d07-0e2adc597951/31540872306.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e64a5395-8944-4a17-a849-7d6353792cd0/wororosimonelo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc41721d-c375-4465-af86-3b420a74af91/manual_de_acero_imca.pdfIn PDF document text
    • https://s3.amazonaws.com/fewifuwu/vajuxadujigo.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 12088 bytes
SHA-256: d9d3ceddd027aa52ae6e0d0e8544dd761795a4a12ff1f4a9b2909c7e2878338d
font_01_sfnt_off0000efdb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFDB 5000 bytes
SHA-256: d6fa0f7169db9260bbb91edeec3e89ada2244284f5d22ee86fc1b2dbe1a59e2b
font_02_sfnt_off000100d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100D6 11636 bytes
SHA-256: 67bbbbca7cd462c0175dfd5297f535dfb62a2f946120a8fea62fa28869286649

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