Malicious PDF — malware analysis report

Static analysis result for SHA-256 6dbf45bfb007825c…

MALICIOUS

PDF

64.5 KB Created: 2020-11-18 13:08:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: fdf26b13d327e93b09543b9e496b85b5 SHA-1: d961af7fa4592220916b7855d08c42025fa5694f SHA-256: 6dbf45bfb007825ca10deb73f92ecdc9f41df81a3f08f2afc8028705c98a780f
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-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/aws?utm_term=acrobat+x+pro+10.+1.+16 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4413705/normal_5fa56c14eb941.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408991/normal_5fac35c9aa6eb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418167/normal_5f9620f3462f4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370525/normal_5f981e1c3952e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426072/normal_5fa1a027a6cd9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381756/normal_5f8d30dca5f34.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496597/normal_5fb466852e3c0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376101/normal_5f9bfc06eaba7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478950/normal_5fb3e4e0ca93e.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/68eec9c9-eaf6-429f-a943-2a46c033c543/hans_zimmer_time_inception_sheet_mus.pdfIn PDF document text
    • https://s3.amazonaws.com/regegozumekoza/65861705079.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/56982111-7941-47ed-9311-fce60b188f75/sistemas_discretos_de_segundo_orden.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e27faab1-4269-4032-a9a2-2c38ab6f0e29/sopa_de_letras_en_espanol_de_halloween.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf02ba05-7b8b-4930-86ae-8ada41f99699/xumotutis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e6c01372-d057-4643-a403-07b7640940df/tisenejizuwig.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_off0000c0b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC0B8 5296 bytes
SHA-256: 4f46a899f0c0afc871b7fea6e1e1c3a8ff95d6215e1b6c3a692932400d9c208a
font_01_sfnt_off0000d2d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2D5 10228 bytes
SHA-256: 69c3387bab65462206f8ac23237ffe2295d506fd8649d0986b5d082bab747c19

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