Malicious PDF — malware analysis report

Static analysis result for SHA-256 70b0d75f7597a2f5…

MALICIOUS

PDF

74.0 KB Created: 2021-04-05 02:35:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 60891b12baca99c99bb0c7f368fc3a9d SHA-1: 05170e7a11a32b245ed5daecf9bc5f6d669b149e SHA-256: 70b0d75f7597a2f577dadebfb30b3377303a743f12b0556ad2bf17336f929031
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, with one heuristic specifically identifying a 'PDF_SEO_LINK_FARM' indicating a large number of outbound links. The presence of a malicious ML classification and ClamAV detection further supports its malicious nature. The embedded URLs suggest an attempt to redirect users to potentially harmful sites, likely for phishing or malware delivery.

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://midufefew.ru/award?keyword=cannibals+with+forks+pdf+download PDF link annotation
    • http://sudilufib.getenjoyment.net/81272573445.pdfIn PDF document text
    • http://oneitshop.info/convert_to_dwg_autocad_2014_free04aj9.pdfIn PDF document text
    • http://legendarycraft.ru/guidelines_for_bioavailability_and_bioequivalence_studiesxm215.pdfIn PDF document text
    • http://tixanijematewe.mypressonline.com/jemupifaxezakikufediro.pdfIn PDF document text
    • http://bibuzikufaje.mygamesonline.org/dymo_letratag_label_maker_ink_refill.pdfIn PDF document text
    • http://nogeturafo.sportsontheweb.net/74129346457.pdfIn PDF document text
    • http://fitokapss.xyz/types_of_equity_structured_productsuggos.pdfIn PDF document text
    • http://vevovifox.scienceontheweb.net/44789878449.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dipagepe.atwebpages.com/lusokujipebusixawo.pdfIn PDF document text
    • http://sazoser.myartsonline.com/peluxi.pdfIn PDF document text
    • https://s3.amazonaws.com/vunizi/melba_pattillo_beals_quotes_warriors_dont_cry.pdfIn PDF document text
    • https://s3.amazonaws.com/jarirotexab/98110499421.pdfIn PDF document text
    • https://s3.amazonaws.com/palikuvexake/kajofunexubitido.pdfIn PDF document text
    • https://6a8c3f3f-5248-4e80-80e0-4bf2c04f72bc.filesusr.com/ugd/8b2c09_0825383091974b618959a66b0365c06e.pdf?index=trueIn PDF document text
    • http://rivetibixonapaz.myartsonline.com/10687158464.pdfIn PDF document text
    • https://s3.amazonaws.com/vexosafugunu/76390389376.pdfIn PDF document text
    • https://0315d410-4255-45a3-9477-873949dd02ac.filesusr.com/ugd/f85006_a4a98d0102594d75bef6fbb2f6967dff.pdf?index=trueIn PDF document text
    • https://1618b3f4-dcc0-4047-a816-eeb1cbe43c51.filesusr.com/ugd/a01749_89e27ff160094c6390f08127d1f76b89.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tobojelusiwi/vibebu.pdfIn PDF document text
    • https://952d9f4b-853a-4e85-af28-23c4d489d487.filesusr.com/ugd/8db125_b7d7806568424d84bb507b8cd3e9c709.pdf?index=trueIn PDF document text
    • http://furunes.onlinewebshop.net/69931248801.pdfIn PDF document text
    • https://s3.amazonaws.com/zunewidimem/47961546193.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_off0000e279.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE279 5332 bytes
SHA-256: fd36d5008c594711b280a5de391fec9ac42c25f43c726de727868aef86d2797d
font_01_sfnt_off0000f49c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF49C 11652 bytes
SHA-256: 987c3d4d00c43f6bbd82cb65098aef76a2ce033230546396768ff860f5d9a902

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