Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e38cb60d9df8454…

MALICIOUS

PDF

70.8 KB Created: 2021-03-24 21:21:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 4aa7c34a74fb60a63fa1fb46d77c39b6 SHA-1: 96d64c429d516d85af3121c17120a57d4db3e5f6 SHA-256: 1e38cb60d9df8454fba682c6b19350f02df2edc24c944f4457237dfd2bbbbe43
156 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 a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

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://lozipotod.ru/strik?utm_term=petsafe+bark+control+collar+not+working PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4455207/normal_602c9605a6596.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401525/normal_600bbd53cda88.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421038/normal_605b037fae5a1.pdfIn PDF document text
    • https://buzixigadojaw.weebly.com/uploads/1/3/5/3/135316262/nevurewima.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443801/normal_60287f7c74215.pdfIn PDF document text
    • https://bizumoku.weebly.com/uploads/1/3/2/6/132681494/gatapilagu_kawezef_zavozo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392872/normal_604d21a7369c4.pdfIn PDF document text
    • https://sesanejaw.weebly.com/uploads/1/3/1/4/131407178/9dab04a24e5.pdfIn PDF document text
    • https://jowujutaxafekul.weebly.com/uploads/1/3/5/3/135348014/3534239.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/ad6c7cf7-b87d-4177-b8a5-22b8f9e406b1/best_mechanical_engineering_books_list.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6dfdf676-e78f-42df-8c6b-172ade864a57/ranazoluzosupu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b93583bb-7bc1-46e3-bfd1-5dba95bdc6a9/voleguk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9070507a-49be-4362-bf53-62bc668fb7a9/what_is_a_good_flow_rate_for_a_pressure_washer.pdfIn PDF document text
    • https://s3.amazonaws.com/zategafozasiru/77086914829.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d4c112e0-24fb-4eda-814b-f19627173cdc/special_education_teacher_assistant_position_description.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5f4eca4f-edaa-419c-bfbd-bbac9b754365/i_robot_full_movie_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e4af6c1b-8521-4532-8b8d-5f936fe285fa/ravelaminilarenemifumilab.pdfIn PDF document text
    • https://s3.amazonaws.com/pozokimepe/belajar_bahasa_jepang_lengkap.pdfIn PDF document text
    • https://s3.amazonaws.com/pibabopuduj/arteriovenous_malformation_in_uterus.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_off0000cc34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC34 5136 bytes
SHA-256: 0e92c65a4b9d99383ae880d8cdcb84fcbfccbdbcabf63d23a1deb571a7ea4a7e
font_01_sfnt_off0000ddc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDC5 9820 bytes
SHA-256: 8c41b64bc2aaf7da18d8cbced2a3f595821d30958958bca9672eaa3c1fa2105c
font_02_sfnt_off0000ff62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF62 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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