Malicious PDF — malware analysis report

Static analysis result for SHA-256 3db521587c17048c…

MALICIOUS

PDF

69.7 KB Created: 2021-03-03 18:39:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 7bc2127acdd3e9e6e73c70fd783102e4 SHA-1: 191b8c759f03076a18495490d5dcee78d9dbe0ac SHA-256: 3db521587c17048cd81c91c27018b30ea10ce8feced4cb14d6f2af803ab38845
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://pelibifir.ru/award?keyword=famous+desert+fathers PDF link annotation
    • https://boxatikavizag.weebly.com/uploads/1/3/4/6/134680825/firaxukekuzepil.pdfIn PDF document text
    • https://cdn.sqhk.co/runetonorox/fhcrI0a/calculate_percentage_change_in_excel_chart.pdfIn PDF document text
    • https://cdn.sqhk.co/zogobadakedu/1giigeu/19907425590.pdfIn PDF document text
    • https://fuxexitir.weebly.com/uploads/1/3/4/0/134098624/vumuvimase_duwidowilorubim.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470553/normal_6030e02d2fd2e.pdfIn PDF document text
    • https://cdn.sqhk.co/xusarukave/6rFgihg/34201226376.pdfIn PDF document text
    • https://dorikorojuj.weebly.com/uploads/1/3/3/9/133987202/rirewejanuzak-xunajiriwedoxod.pdfIn PDF document text
    • https://figokafudifugi.weebly.com/uploads/1/3/1/3/131383964/delukokafaweza_vujipuwewiv_wukukipif.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484635/normal_603368926c4b0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486365/normal_60185e0ca6b52.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tanikanaw/rigizomigotorasi.pdfIn PDF document text
    • http://xixonuw.rf.gd/nugejatagelalesur.pdfIn PDF document text
    • https://s3.amazonaws.com/xunilukegez/lusimagadivudez.pdfIn PDF document text
    • https://s3.amazonaws.com/wibedubosateg/quran_pak_with_urdu_translation_dawateislami.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_off0000d821.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD821 5068 bytes
SHA-256: 38ace8da80c44410d41c7c7702cbf958aa6b4ef9add91b9a4cb0ddb7ea7d2b0b
font_01_sfnt_off0000e92e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE92E 9724 bytes
SHA-256: e9cfcf64d170ded600606689a0e8f4eedefda9a3764c9089456ef529146c45a0