Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba62be57f669f882…

MALICIOUS

PDF

70.2 KB Created: 2021-03-17 07:30:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: b234ba862dddfa2405dcee10915a843d SHA-1: 1111e814dd736bcefbe85cac91c1066c589461f9 SHA-256: ba62be57f669f882785fce47d38d8442f79bdeb3e4acc62a88c5556af56eb0ba
134 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

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 and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/wix?keyword=minecraft+pe+apk+0.13.0 PDF link annotation
    • http://help-business-media.com/fracciones_equivalentes_para_tercerca9d3.pdfIn PDF document text
    • http://flathead.us/37387079829xja1q.pdfIn PDF document text
    • http://jadebey-x.com/ximekonill2gdd.pdfIn PDF document text
    • https://jikabokuw.weebly.com/uploads/1/3/4/6/134658058/gofededifufezanop.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421209/normal_6026b9e177f30.pdfIn PDF document text
    • https://lutaxebibutemun.weebly.com/uploads/1/3/1/3/131380730/6401564.pdfIn PDF document text
    • http://tipofeliluget.medianewsonline.com/we_by_yevgeny_zamyatin_setting.pdfIn PDF document text
    • http://xamoxipuwizutux.scienceontheweb.net/32334765054.pdfIn PDF document text
    • https://fikobovivinuzo.weebly.com/uploads/1/3/0/7/130739062/fagide.pdfIn PDF document text
    • http://wide-do.top/911048197211qv5c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465249/normal_601658e1e336f.pdfIn PDF document text
    • https://cdn.sqhk.co/xenotami/hsgcljc/97314327296.pdfIn PDF document text
    • http://biomanix.best/city_fighter_vs_street_gang_mod800cl.pdfIn PDF document text
    • https://cdn.sqhk.co/nakunadubux/jftAYm4/33249508058.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456378/normal_6023e118e4990.pdfIn PDF document text
    • https://cdn.sqhk.co/laxiroroweno/hhgvzal/no_crop_online_for_instagram.pdfIn PDF document text
    • https://tizizuner.weebly.com/uploads/1/3/1/8/131872037/4672502.pdfIn PDF document text
    • http://lololoj.sportsontheweb.net/second_grade_2nd_grade_measurement_worksheets.pdfIn PDF document text
    • https://warevinigipa.weebly.com/uploads/1/3/4/8/134898994/nomulefubokaxowoziv.pdfIn PDF document text
    • https://cdn.sqhk.co/dibidoretu/zVgegc5/writer_simulator_2_mod_apk_1._1._66.pdfIn PDF document text
    • https://cdn.sqhk.co/joxipadij/hjblFgd/32948397341.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/fb5602a1-f640-4299-a320-79847277c533/how_to_connect_xfinity_modem_router.pdfIn PDF document text
    • http://vilepobafomunow.atwebpages.com/python_dash_tutorial.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9ce797be-c8f4-4869-b883-3b84c3419b5f/27971644346.pdfIn PDF document text
    • http://sujunutab.atwebpages.com/fundamentals_of_sql.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_off0000d597.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD597 5260 bytes
SHA-256: 2c2aad7bd687fb85d9017e029d3eed1d3f2fe6894453ee5737e0ffa0a3bc7ec8
font_01_sfnt_off0000e7ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7AB 10460 bytes
SHA-256: 7d7e11d2a118640b2f2c121b60ad349b0d2f5eaf28d696b5638c329b314497d3

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