Malicious PDF — malware analysis report

Static analysis result for SHA-256 c38834a02c5045e8…

MALICIOUS

PDF

81.2 KB Created: 2021-03-23 19:46:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 9979d34a0793c105837924df2e8522c7 SHA-1: a991fcee09e57dab0374190089bd43719ed60b29 SHA-256: c38834a02c5045e80f07c8460ee9cadcf2de94e327d5d915c2971767b4881f85
156 Risk Score

Malware Insights

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

The PDF contains a significant number of external links, many of which are numerically or generically named, suggesting a link farm designed to host or redirect to malicious content. The presence of a URL referencing 'my talking angela hack apk' further indicates a lure for potentially unwanted or malicious software. ClamAV and ML classifiers confirm the malicious nature of the PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://lozipotod.ru/wix?keyword=my+talking+angela+hack+apk+3.6.6.124 PDF link annotation
    • http://pixizosusonaxij.sportsontheweb.net/87043898216.pdfIn PDF document text
    • https://cdn.sqhk.co/fiwujumejuf/H951Lje/zombie_sniper_unblocked.pdfIn PDF document text
    • https://cdn.sqhk.co/pulununese/jciehjM/12135846978.pdfIn PDF document text
    • http://naxajogilelog.medianewsonline.com/pakuzunedizebazikesas.pdfIn PDF document text
    • https://pofekabebo.weebly.com/uploads/1/3/0/7/130739116/acb9c8.pdfIn PDF document text
    • http://vixabaj.scienceontheweb.net/alcoa_fastening_systems.pdfIn PDF document text
    • https://jodeliloku.weebly.com/uploads/1/3/5/9/135975589/luvowe.pdfIn PDF document text
    • http://pedumerik.sportsontheweb.net/abstract_on_bacterial_concrete.pdfIn PDF document text
    • https://pamaxorakumi.weebly.com/uploads/1/3/4/0/134019068/gazojewewa.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://s3.amazonaws.com/zobuwubedak/32392909530.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8c5cbeea-ee55-4056-9851-e9b29a9a8478/public_speaking_topics_for_college_students.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f9a069fe-e780-4971-a0eb-310b2f48ceed/tarubebubuvumak.pdfIn PDF document text
    • http://vepitejususas.atwebpages.com/brand_awareness_marketing_plan.pdfIn PDF document text
    • https://s3.amazonaws.com/xojafemori/discussion_lab_report_biology_plant_tissues.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/42512cf2-9804-47d9-a204-27d642d1c50f/23283607437.pdfIn PDF document text
    • https://s3.amazonaws.com/dojonuta/86215317122.pdfIn PDF document text
    • https://s3.amazonaws.com/mamibis/76489609750.pdfIn PDF document text
    • https://s3.amazonaws.com/sesafefanulokam/36190698510.pdfIn PDF document text
    • https://s3.amazonaws.com/feborobegibew/vokoxebiruper.pdfIn PDF document text
    • https://s3.amazonaws.com/vexosafugunu/circle_theorems_summary_sheet_tes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/58bb4317-d750-430e-8761-0a410a53e276/3492146418.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_off0000e838.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE838 2880 bytes
SHA-256: b90b109c34db9b2d961be312c0c64f13ba4f5af9c83d6ae4556a72cb7f468167
font_01_sfnt_off0000f276.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF276 5392 bytes
SHA-256: 6e587a15969acbfb6a81eba979878e5427312fb56ccd9e43454199516f8e488a
font_02_sfnt_off000104df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104DF 10492 bytes
SHA-256: b6532c939bde5def65311dd461da94baa92791f931c615a8a49f4d76370dacb4
font_03_sfnt_off00012900.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12900 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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