Malicious PDF — malware analysis report

Static analysis result for SHA-256 e352c3e7f8b58335…

MALICIOUS

PDF

79.5 KB Created: 2021-04-04 07:18:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: afee8fd07be19cc6bace2f3cb91ce4dc SHA-1: ea9b92a6cb95b10249df5bdb56674c352a815d21 SHA-256: e352c3e7f8b5833510d9ed9161d701b4286e4522d0d6cbfcb4a072d64aa66f23
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 0.9991

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://baarspo.ru/award?keyword=the+search+for+lost+time+pdf PDF link annotation
    • https://cdn.sqhk.co/wavudasawete/o6o0PH5/household_employer_s_tax_guide_2017.pdfIn PDF document text
    • http://bezerojiw.scienceontheweb.net/nawupamujerekopod.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382782/normal_5fe58e7c7631a.pdfIn PDF document text
    • https://cdn.sqhk.co/xolanikipiz/cheCJgd/color_ball_run.pdfIn PDF document text
    • http://xepidenad.scienceontheweb.net/lojonunofizemiwajenarag.pdfIn PDF document text
    • http://fertpin.online/2012_imdb_parents_guide91asx.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381528/normal_6029f54144aaf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4528876/normal_5fe0a87e615b5.pdfIn PDF document text
    • https://cdn.sqhk.co/gobefuvumi/CgcBjM7/74013026278.pdfIn PDF document text
    • https://cdn.sqhk.co/vugiboba/yihjfgj/67367184527.pdfIn PDF document text
    • http://dusipoweg.mywebcommunity.org/fugemirewedos.pdfIn PDF document text
    • http://lagejarejitog.mypressonline.com/alcalosis_metabolica_2020.pdfIn PDF document text
    • http://fb-ig-violation.com/i_e_irodov_problems_in_general_physics_solutionsp8smx.pdfIn PDF document text
    • http://goldstein.berlin/harry_potter_2020_advent_calendar_instructionszzyj4.pdfIn PDF document text
    • http://xumupizaxuto.scienceontheweb.net/patofisiologi_tumor_mediastinum.pdfIn PDF document text
    • http://supariwepexafat.mywebcommunity.org/kalobiwozorenojuguvuvero.pdfIn PDF document text
    • http://nafugelinev.iblogger.org/86111022014.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mowesedapi.epizy.com/vegedi.pdfIn PDF document text
    • http://luvabokinoleg.onlinewebshop.net/57337158687.pdfIn PDF document text
    • http://joluror.rf.gd/leaf_apex_information.pdfIn PDF document text
    • http://xukokumo.myartsonline.com/crescendo_book_free.pdfIn PDF document text
    • http://diwavubodinaroj.myartsonline.com/868986856.pdfIn PDF document text
    • http://gixisenusadat.rf.gd/los_angeles_housing_authority_complaints.pdfIn PDF document text
    • http://guriseb.myartsonline.com/ap_calculus_ab_derivatives_of_inverse_functions.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_off0000f925.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF925 5344 bytes
SHA-256: e0f421fdfe2e20c7fdafd243f52d05413fff2e5aac12e960e563f602bc849f49
font_01_sfnt_off00010b26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B26 10864 bytes
SHA-256: f5f027598981e64145f9ee4026b997027eb7a78573fc77670c7d906c5e90bafa

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