Malicious PDF — malware analysis report

Static analysis result for SHA-256 1afbaef32cdc034a…

MALICIOUS

PDF

74.5 KB Created: 2021-01-05 06:33:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 8e4323490fbe1e5e6e102ec466ba66b1 SHA-1: d62d0ead17a0caa93c73f528a33df663fbaac4f6 SHA-256: 1afbaef32cdc034a87b3b1ea22dc12a3218536f538c510ae0c075648dca9c096
96 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 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://trafficel.ru/aws?utm_term=ereading+figurative+language+worksheets PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4445890/normal_5fa82931dc04a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420934/normal_5f9ad29169835.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/5cb11d2b-f991-4703-acef-41d39930b914/70255651662.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c1e197f3-7e49-45d9-8b4e-a6b93a095dfa/71882531798.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1e0b7fa0-ae81-4605-8532-14ef8a4ac124/92774624098.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0a6e702d-4272-44b1-9363-d0785e1b5dbc/why_do_factory_farms_use_antibiotics.pdfIn PDF document text
    • https://s3.amazonaws.com/vavale/fijodifejawur.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c5cf4e87-b743-4e79-998f-aed4d77d92ca/4009047148.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/30a9cbe7-b528-4492-9256-a49e9643caa3/40559392465.pdfIn PDF document text
    • https://s3.amazonaws.com/jinabom/extension_for_microsoft_excel_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/vitelitubovuluj/centos_7._7_iso_image.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/22cd65f9-b755-4aff-98ec-a4b6c56e5474/38033856808.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_off0000da77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA77 5224 bytes
SHA-256: 389cb874dabaeb4ff31bff155cac4ef1dca62f5c44990e42b6f0f5568998cc68
font_01_sfnt_off0000ec48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC48 10100 bytes
SHA-256: 2089de9c2f70d1b9062f1c88b02650b757d8ab4798ce994ffbce20ea5b65d424
font_02_sfnt_off00010ee0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10EE0 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f