Malicious PDF — malware analysis report

Static analysis result for SHA-256 18412e07caef56d5…

MALICIOUS

PDF

38.7 KB Created: 2020-11-08 00:41:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 37a85e873d2cb97f6692b537115a2650 SHA-1: 4de4f9fb181cfb99541b67eb521a7c3197ad43c8 SHA-256: 18412e07caef56d53239b47a38a26824052bf3d6c9109e2be4cb0df693fbe6bd
66 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://traffset.ru/123?keyword=desert+valley+elementary+summer PDF link annotation
    • https://jalewigevat.weebly.com/uploads/1/3/2/6/132681207/potole.pdfIn PDF document text
    • https://welavofewefose.weebly.com/uploads/1/3/0/8/130813025/zilijirarugepe_nutere_tavukutejoka.pdfIn PDF document text
    • https://turikiripejuz.weebly.com/uploads/1/3/4/5/134501804/lutuguluwemej.pdfIn PDF document text
    • https://vilukenuxe.weebly.com/uploads/1/3/2/8/132814007/3e352.pdfIn PDF document text
    • https://nanorobudilason.weebly.com/uploads/1/3/0/7/130775181/nimunat.pdfIn PDF document text
    • https://sabidodavo.weebly.com/uploads/1/3/1/4/131408103/3781453.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392472/normal_5f98785f8ad3a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377401/normal_5f9791565da57.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377717/normal_5f8e4a489192b.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://ruvopesej.files.wordpress.com/2020/11/92864444323.pdfIn PDF document text
    • https://fozevetob.files.wordpress.com/2020/11/megavokig.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_off00004e90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4E90 4716 bytes
SHA-256: a2d74fb7a0278335fa2faf5e7d905c0fdfefb7a94e2e0a3121216d414c1ac6d4
font_01_sfnt_off00005e7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E7F 9708 bytes
SHA-256: 7ebcb5490c6d34dded4d3bfe70d6caaa03e991c35f0a5a75b9843f234b57ec3c
font_02_sfnt_off00007fc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FC8 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c