Malicious PDF — malware analysis report

Static analysis result for SHA-256 87ea62cf7fb1dbed…

MALICIOUS

PDF

50.3 KB Created: 2020-10-31 11:08:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 60e68cb134ccc40eeca9d1c9ad34d237 SHA-1: 2b80d46c6f14c7f277780afb4e29d0a2d9b34b5e SHA-256: 87ea62cf7fb1dbed16f587a6c797c060745b3df32035d37c2a159647bd3c6a6d
94 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by 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 1.0000

Heuristics 3

  • 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://ttraff.me/123?keyword=techno+beat+electronic+keyboard+user+manual In PDF document text
    • https://jetizapu.weebly.com/uploads/1/3/4/3/134371104/7329994.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383149/normal_5f8ff5b550ae1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368249/normal_5f98eea55994f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425760/normal_5f983118bd793.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426687/normal_5f9c438263334.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373301/normal_5f8fe9a569cac.pdfIn PDF document text
    • https://fiwatinizajof.weebly.com/uploads/1/3/0/8/130874156/jewelef.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/512ef65a-6ea3-4171-ad4d-cf762fdaada3/troy_bilt_tb475ss_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/762626f8-a79a-42ee-8b12-32778aa82167/70642292218.pdfIn PDF document text
    • https://s3.amazonaws.com/temujonuwu/jefoxikuxirexarunufa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8782/9928/files/cheat_engine_6.4_apk_for_android.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8546e0f3-dbc9-4e12-9df5-dd353d46970e/41671295455.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b9c6163f-1549-4c7b-aebf-b41ee8140e05/soneb.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_off00008455.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8455 5432 bytes
SHA-256: 82b5abf9fc227b46ccaf214f47b4329b00ae983e1b4597745a2ad897cb6abfcc
font_01_sfnt_off000096aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x96AA 10964 bytes
SHA-256: b4adcd45ce92718499abdf25e40fb4221792d71f463f360f3469dbaa856e042c