Malicious PDF — malware analysis report

Static analysis result for SHA-256 deb7218fa118ceee…

MALICIOUS

PDF

76.3 KB Created: 2021-02-15 19:07:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 25fad0b34806aa0627e5ee5ca7081571 SHA-1: 00f8e1f786a47fb9b3a617cb0179d896096eaf8c SHA-256: deb7218fa118ceee6c79eae24708321dcaf6cb8d0b54ea2127d52e10ffa0017f
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://crophysi.ru/strik?utm_term=taco+bell+breakfast+crunchwrap+review PDF link annotation
    • http://techanomic.com/zujavomekebusom6g.pdfIn PDF document text
    • https://cdn.sqhk.co/nuvexajamu/aX11jiq/tomaj.pdfIn PDF document text
    • http://moreprodukti.com/meletofudosefoxafadusaa3xp4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473890/normal_601689c375791.pdfIn PDF document text
    • https://cdn.sqhk.co/natefisaka/hiihhh6/birthday_cake_ideas_design.pdfIn PDF document text
    • https://cdn.sqhk.co/xalurubizud/gihcqJG/earthbound_game_switch.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393044/normal_5fcf3079f2830.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450732/normal_602a264dd3289.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454049/normal_5ff677a59cf69.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393508/normal_5fc91b5cc6559.pdfIn PDF document text
    • https://cdn.sqhk.co/fiwujumejuf/UhfCbud/80724462930.pdfIn PDF document text
    • http://cupe1.ru/39192046611esftv.pdfIn PDF document text
    • https://cdn.sqhk.co/vopupevomate/0Qihnsb/likaravomafazasinulazut.pdfIn PDF document text
    • https://cdn.sqhk.co/linidivez/fQedVhc/create_your_own_vpn_tunnel.pdfIn PDF document text
    • https://cdn.sqhk.co/nomitusibop/j3NMze8/smart_tv_50_inch_sale.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/bejikefowu/alta_frequencia_filme_legendado.pdfIn PDF document text
    • http://mujujilunel.epizy.com/1st_grade_vocabulary_words_worksheets.pdfIn PDF document text
    • http://bukofitezude.rf.gd/chandigarh_police_application_form_2018.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_off0000eb26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB26 5408 bytes
SHA-256: e89615c7855ab7577edce466d888498b8f876b163f7b5fe1fcded3c8225f0ac4
font_01_sfnt_off0000fd9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD9E 11508 bytes
SHA-256: 5eedd28f8f8dc0d38bf373d7f7b37c6082a64a86bc827e4ad12ae42cbff8b64c

Open this report in the interactive analyzer, or submit your own file for analysis.