Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1a495644f3f6ba1…

MALICIOUS

PDF

69.3 KB Created: 2021-05-11 07:07:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 97cdc56e2237139bbeacc3de5b3e05a8 SHA-1: 10e4fcbeabdf1f2965d959eb0ccb3321d1624194 SHA-256: d1a495644f3f6ba1ad2a8088e62962dc941d3275c4cb575a2d58cafb9234e422
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 0.9996

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://pelibifir.ru/strik?utm_term=lg+cosmos+3+vn251s+-+black+%2528verizon%2529+cellular+phone PDF link annotation
    • https://cdn.sqhk.co/komajekolino/w6MsgfK/games_for_2nd_grade_dragon_books.pdfIn PDF document text
    • https://namovanuzo.weebly.com/uploads/1/3/1/6/131606642/sudoziva.pdfIn PDF document text
    • http://pemufosapakem.mypressonline.com/4495823645.pdfIn PDF document text
    • https://kofulunaj.weebly.com/uploads/1/3/5/3/135320514/memupuganete-mozafam.pdfIn PDF document text
    • https://cdn.sqhk.co/muwunupudi/hd6idje/fokifefakaj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467038/normal_5fc945c6a71da.pdfIn PDF document text
    • http://mesutilixuta.sportsontheweb.net/editing_pages_online.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368951/normal_604836e8b5e56.pdfIn PDF document text
    • https://pewituzusab.weebly.com/uploads/1/3/0/8/130874049/5b9b5096deb47.pdfIn PDF document text
    • https://worubagazew.weebly.com/uploads/1/3/4/6/134639575/jesimakutude_mowejudum_dirogoxok_xeladojajipibo.pdfIn PDF document text
    • http://rowowevu.mypressonline.com/tratamiento_para_absceso_cutaneo.pdfIn PDF document text
    • http://bisibometixo.mywebcommunity.org/7_times_table_chart_up_to_30.pdfIn PDF document text
    • https://cdn.sqhk.co/tajugajobib/hhQyigG/kubumoninisizunomigozujuk.pdfIn PDF document text
    • https://gofolepoxi.weebly.com/uploads/1/3/4/8/134882907/nosiwupi_tutel_fonatut.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://puribisipup.atwebpages.com/jodexejoloru.pdfIn PDF document text
    • https://s3.amazonaws.com/xofalepelala/example_of_psychological_report.pdfIn PDF document text
    • https://s3.amazonaws.com/lijulijowivaze/mera_badshah_hussain_hai_mp4.pdfIn PDF document text
    • http://rowoniwetob.atwebpages.com/nigufeluberegajabawegu.pdfIn PDF document text
    • https://s3.amazonaws.com/gorajikunobixi/nokuzagefatofata.pdfIn PDF document text
    • http://wutesejib.onlinewebshop.net/business_email_writing_course.pdfIn PDF document text
    • http://kikanelomer.onlinewebshop.net/wetibe.pdfIn PDF document text
    • https://s3.amazonaws.com/pajeriramal/nubiwegowolawebegaguwere.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cdb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDB9 6260 bytes
SHA-256: e0da5a09c3729fe41d048982754e71f078c93539527218e600e3a188712b99fa
font_01_sfnt_off0000e313.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE313 10676 bytes
SHA-256: e372643438c05fbe4584843aba1578508954fa04fb1bece1a0e2f7200d7a0ee0

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