Malicious PDF — malware analysis report

Static analysis result for SHA-256 235f38d0694eb81d…

MALICIOUS

PDF

60.3 KB Created: 2021-02-13 11:37:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 46e496a3727621003f516557643d2ba6 SHA-1: 432aac03937f770369728ca5656f831c68d39046 SHA-256: 235f38d0694eb81dba52855e4207494fd956aa39f6544952d496f840b5087d8c
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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 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://maypoin.ru/wix?keyword=ionic+bonds+answer+key+gizmo PDF link annotation
    • https://giweberemep.weebly.com/uploads/1/3/2/6/132682555/048cc96312575.pdfIn PDF document text
    • http://reduslim-ufficiale.website/749051191148ykyj.pdfIn PDF document text
    • http://daniele.store/testosterone_metabolismd3z5w.pdfIn PDF document text
    • http://bestpriceforukraine.xyz/pixel_car_racer_toyota_crownw19ox.pdfIn PDF document text
    • http://irisca.online/40632614670vuoqy.pdfIn PDF document text
    • https://pegepujime.weebly.com/uploads/1/3/1/4/131453637/wenabukakul_gupowesemomi_mukukabira.pdfIn PDF document text
    • https://sugelama.weebly.com/uploads/1/3/4/8/134898925/nasuvor.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rikirusekufipu.epizy.com/doj_ig_report_fisa.pdfIn PDF document text
    • https://s3.amazonaws.com/tikofaketonub/zafazel.pdfIn PDF document text
    • https://s3.amazonaws.com/bededuxotulapil/the_adventures_of_huckleberry_finn_ebook.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_off0000af35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAF35 5612 bytes
SHA-256: f256830cf34779c4ac57315f33b1a2c4da4ab6c1d75323a0d945e7f7e93f2e61
font_01_sfnt_off0000c25a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC25A 9624 bytes
SHA-256: 1bd3329783f536e27256008f794b811fe8f425c1569c1a1ca2ba75b1bddc2094