Malicious PDF — malware analysis report

Static analysis result for SHA-256 70bdb7c3167fad9d…

MALICIOUS

PDF

62.9 KB Created: 2020-11-18 04:39:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: aef2ecf2e23961bd4086a11271468589 SHA-1: 8e035a38123b230a5d8d20e01601c8ffde76597b SHA-256: 70bdb7c3167fad9d6a7d79f67b4be5bc78374d4943eadf09f08d159f3104aa9d
154 Risk Score

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 routes users through malicious redirector infrastructure. 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
  • 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=saunders+cervical+hometrac+device In PDF document text
    • https://cdn-cms.f-static.net/uploads/4381321/normal_5f9af7245e5d2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443588/normal_5f9caca445170.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375886/normal_5fa1f683431cd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379229/normal_5f8c1f28c12dd.pdfIn PDF document text
    • https://wupuvogobed.weebly.com/uploads/1/3/4/5/134507139/tabirivaso_begesepixo_vefekonikogiram.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/vexosafugunu/warranty_deed_florida_search.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f62802e1-0e90-41f0-b041-021811f55d81/kotor_2_crafting_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/jusuberu/8_ball_pool_hack_apk_ios.pdfIn PDF document text
    • https://s3.amazonaws.com/matogapibelifiv/kumofolipiviva.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec48e3d0-de91-45f4-9132-bf0d4a2de134/73762768026.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b6aba14-7335-405a-9830-e486a66b9954/rijaloz.pdfIn PDF document text
    • https://s3.amazonaws.com/kexamoxusinixu/43115091277.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_off0000b8ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB8EF 5340 bytes
SHA-256: 43833bd557534d40c95cd674a328c9e525add179d9415e4ef7f5806719f15150
font_01_sfnt_off0000caf7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAF7 10716 bytes
SHA-256: 5f97fdfeeb5133c2930ce01976f9f7754ead10198cbc1e7102a5b47ba32e863f