Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0ebbd69957b1b85…

MALICIOUS

PDF

72.4 KB Created: 2020-12-22 19:55:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 70aa3765c4499d8c03401a2813c37386 SHA-1: 1be646486402e18522a173333428b7dc38acc36c SHA-256: b0ebbd69957b1b85214f9e8873bfbb5d2aa13e15d26f8b8741457b002ce7e5e1
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with one prominent URL pointing to 'trafftec.ru' and another to an S3 bucket. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting a link farm or distribution mechanism. ClamAV detection and ML classification strongly indicate maliciousness, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://trafftec.ru/aws?utm_term=impulse+buying+questionnaire+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4384649/normal_5fdbcdc95b5b7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460255/normal_5fdf7612531f6.pdfIn PDF document text
    • https://keregejuvuja.weebly.com/uploads/1/3/4/3/134345288/6368093.pdfIn PDF document text
    • https://riwisasivituw.weebly.com/uploads/1/3/1/0/131070703/7373486.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/kujesulad/shoreditch_platform_lounge.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c6bb83be-6573-4364-a9a3-45528a9c93ae/punidokisexelozanef.pdfIn PDF document text
    • https://s3.amazonaws.com/zinudipir/telalovovikujuz.pdfIn PDF document text
    • https://s3.amazonaws.com/sajezife/49917994099.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/291662d0-f176-40ed-884d-735fdfe22b0c/factores_de_conversion_2_eso_ejercicios_resueltos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/42feb901-7dc3-4289-a6b1-e2199b154cfa/vewimatinefiwa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/769f60da-739c-4560-b5d8-72291df79cde/nuvuripozikedive.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b8601d88-e401-49ee-9099-6383b8a6cc85/95930062332.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc7159063393450185211d0/t/5fccfb8d33187724c4f3c071/1607269262839/cell_evolution_game_online.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc144a93398ff7515307f21/t/5fc467bd7acac6192a4dfa8c/1606707134156/female_wolf_names_from_movies.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_off0000cef7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEF7 5548 bytes
SHA-256: ad03e79683d498bf26066a2b5a1800dff95335fb95bc82611f6e545af301e752
font_01_sfnt_off0000e1a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1A6 10876 bytes
SHA-256: 762f3f087518ac087af23123e4956e3d9fc655aeb4395ef71413d15f81eb2b88
font_02_sfnt_off000106b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106B7 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

Open this report in the interactive analyzer, or submit your own file for analysis.