Malicious PDF — malware analysis report

Static analysis result for SHA-256 245f2ec814c1bc4f…

MALICIOUS

PDF

72.3 KB Created: 2021-03-08 14:15:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: dfa9960690531bfddafdc6ac1604a541 SHA-1: 2c16c3898f5bc5abc2df914cce77092b2d3e402d SHA-256: 245f2ec814c1bc4f5c2b8fc472864980b09002d9573218374484d6a2cf47e9dc
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://gimoguvi.ru/award?keyword=kurs+angielskiego+chomikuj+pdf PDF link annotation
    • https://wigulasekejum.weebly.com/uploads/1/3/4/4/134492960/b8d6d698d.pdfIn PDF document text
    • https://xegogebereduxu.weebly.com/uploads/1/3/1/1/131164392/sozofuxirowo_bubetapexofuwif.pdfIn PDF document text
    • http://agencymedia-ig.com/govila6t8xu.pdfIn PDF document text
    • https://sijetiwiriwex.weebly.com/uploads/1/3/2/6/132683168/suzufonabup.pdfIn PDF document text
    • https://pitejuxupukure.weebly.com/uploads/1/3/4/5/134500798/1902227.pdfIn PDF document text
    • http://groshyk.site/how_do_you_combine_like_terms99mcb.pdfIn PDF document text
    • http://copyright-help-report.com/how_do_i_drain_my_lg_front_load_washer01n7p.pdfIn PDF document text
    • http://mon-cmbretagne.com/42918179817gipor.pdfIn PDF document text
    • http://ketrovk.xyz/is_kundli_matching_necessary_for_love_marriagejmli7.pdfIn PDF document text
    • https://xopekasas.weebly.com/uploads/1/3/4/7/134748476/d562aa6a4.pdfIn PDF document text
    • https://nazugawexavidi.weebly.com/uploads/1/3/4/6/134678572/27ffaf41a7a22d.pdfIn PDF document text
    • http://katermore.ru/dadotifizudajeropisaxofodknyp.pdfIn PDF document text
    • https://kibasixeb.weebly.com/uploads/1/3/1/4/131438563/kixem_ruxoxotawemu_zifin_todule.pdfIn PDF document text
    • http://normal-id.com/20312100927xzpzs.pdfIn PDF document text
    • https://lelopotive.weebly.com/uploads/1/3/0/7/130738546/3b564136d2b5.pdfIn PDF document text
    • http://5coupon.info/ar_15_ammo_shortage3sbm4.pdfIn PDF document text
    • https://pifaxatopegamu.weebly.com/uploads/1/3/4/1/134108845/jexuji.pdfIn PDF document text
    • http://formverifiedbadge.com/discuss_briefly_density_dependent_and_density_independent_factors_that_affect_population_sizev639q.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/wizakokowe/sapoxubidojamuruxapese.pdfIn PDF document text
    • https://s3.amazonaws.com/fulazelof/75401132961.pdfIn PDF document text
    • https://s3.amazonaws.com/libosokune/aleks_math_answers_college_algebra.pdfIn PDF document text
    • https://s3.amazonaws.com/tidigudetefumof/bitcoin_arbitrage_opportunities_a_short_guide.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_off0000dc4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC4C 5676 bytes
SHA-256: 7b21b3f2e7f024bddc5ec19575d33eadce743643607b5ba25ffa322fe95a832c
font_01_sfnt_off0000ef76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF76 10892 bytes
SHA-256: 645a892fdd6019552833e7eca75173ab8b88658edfee39832bd6db543dfd21ac

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