Malicious PDF — malware analysis report

Static analysis result for SHA-256 158ea830eb07402b…

MALICIOUS

PDF

59.9 KB Created: 2021-01-29 14:55:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 96cf361fc7bef6fed37d2792df5503f8 SHA-1: 9b73dc96d4a3cc07e0ef72bde7b5698f4340a074 SHA-256: 158ea830eb07402b99fbc2d494d79761aa060950b107e325ba7e7a66d8f47d80
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://bologen.ru/wb?keyword=youtube%20papa%20pear%20saga%20level%201080 PDF link annotation
    • http://fanuvowebutil.22web.org/kdigo_guideline_hypertension.pdfIn PDF document text
    • https://sakurulemiba.weebly.com/uploads/1/3/0/9/130969926/3879771.pdfIn PDF document text
    • http://kubarabonexomi.iblogger.org/bureaucratic_reforms_in_pakistan.pdfIn PDF document text
    • https://repemokalit.weebly.com/uploads/1/3/1/8/131856723/pubopazul.pdfIn PDF document text
    • https://lepopitiw.weebly.com/uploads/1/3/4/7/134762721/c277001c5fc7d.pdfIn PDF document text
    • https://jenisevemib.weebly.com/uploads/1/3/1/0/131070602/fusamuk_vimetavujigomaf_xokanuru_woguluraxu.pdfIn PDF document text
    • https://fanuterose.weebly.com/uploads/1/3/3/9/133999321/9111490.pdfIn PDF document text
    • https://gotizede.weebly.com/uploads/1/3/2/6/132695714/da21f3c11454.pdfIn PDF document text
    • https://dolevepi.weebly.com/uploads/1/3/4/5/134587457/6bc6be94.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://ruvatarojamun.rf.gd/lie_nielsen_honing_guide.pdfIn PDF document text
    • http://bufiziwo.rf.gd/wawopogudanovokelosup.pdfIn PDF document text
    • https://s3.amazonaws.com/rilexazejuzovep/acute_otitis_media_guidelines_2017_adults.pdfIn PDF document text
    • http://zilomit.epizy.com/gps_backtrack_app_for_android.pdfIn PDF document text
    • http://rajunuximu.epizy.com/13166988473.pdfIn PDF document text
    • http://kubudafexajik.rf.gd/volesupofanakipu.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_off0000b19e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB19E 5536 bytes
SHA-256: 3cc2426411cf88c762dd413bc0c004ce4415c0821f1e43bf8384c5699e706c6e
font_01_sfnt_off0000c48b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC48B 8920 bytes
SHA-256: 2a4d0c88640984e81996437c026e8545d73cb5cb7991a5fdd93bb35f80c48bf8