Malicious PDF — malware analysis report

Static analysis result for SHA-256 6880f286ef9d7bac…

MALICIOUS

PDF

76.0 KB Created: 2021-03-06 00:17:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 15f0ddb9b902685bea896e16670cf806 SHA-1: 2d04784249b16020ca2832c8ca8b28a848cd2246 SHA-256: 6880f286ef9d7bac77f46408ef138c3da5405c4e66f606add92cb194eac9493a
156 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which are disguised as relevant content, indicating a link farm or phishing lure. The ClamAV detection and ML classifier strongly suggest malicious intent, specifically identified as a phishing trojan. Although no scripts were explicitly extracted, the PDF structure and numerous external URIs point towards a malicious distribution or phishing campaign.

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 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://leonvi.ru/strik?utm_term=ways+to+improve+listening+skills+in+the+workplace PDF link annotation
    • http://dreamingdeveloper.com/wsdot_cameras_i_90za38e.pdfIn PDF document text
    • https://redobalopubijav.weebly.com/uploads/1/3/1/3/131380120/topapatun.pdfIn PDF document text
    • http://giwapozolaleg.mypressonline.com/peavey_classic_50_50_power_amp_for_sale.pdfIn PDF document text
    • http://damita.fun/skull_dungeon_ninjagol31cq.pdfIn PDF document text
    • http://wersita.space/mebetelads0nx.pdfIn PDF document text
    • http://fonujameritules.getenjoyment.net/39662605448.pdfIn PDF document text
    • http://disconto50.info/nudutoxawuzepanaxozinulveil7.pdfIn PDF document text
    • http://pidawudimo.scienceontheweb.net/sezotep.pdfIn PDF document text
    • https://memuvarava.weebly.com/uploads/1/3/1/3/131384606/6061232.pdfIn PDF document text
    • http://shimano-stradic.ru/gokukekamolvi.pdfIn PDF document text
    • http://fesotisifofil.mygamesonline.org/veguxopofetukosit.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://8dfd47f4-e591-4377-92a3-bdbf91d41e5a.filesusr.com/ugd/a58b01_96cd928bbe2e4d52a5522fb584cc9158.pdf?index=trueIn PDF document text
    • https://adc0bc6f-2b4d-4951-bce0-9128d215fa34.filesusr.com/ugd/5ea4d5_6b47c00f56564bdd9256010a5456d34a.pdf?index=trueIn PDF document text
    • https://ab25a8b3-4d80-4d4b-93a1-c1347014fa7c.filesusr.com/ugd/8d0191_0dc3d46270d742f694599b40c2c21c37.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fejenijovekozu/archimate_canvas_templates.pdfIn PDF document text
    • https://66f9c2bc-82a6-463d-9ccd-9c94d3d8805e.filesusr.com/ugd/b361c6_f12b4acf84244cec8097bda2cfbfefe0.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/peveziwoguxuzam/sevedusunagamokul.pdfIn PDF document text
    • https://s3.amazonaws.com/mafavuzenoliki/19689621387.pdfIn PDF document text
    • https://s3.amazonaws.com/rijaliwiguvex/financial_reporting_analyst_salary_luxembourg.pdfIn PDF document text
    • http://lobopekogolo.onlinewebshop.net/39563672585.pdfIn PDF document text
    • https://s3.amazonaws.com/xamibudasagas/hungry_horse_menu_nutritional_information.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_off0000eb71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB71 5676 bytes
SHA-256: 9b5d3a6c438eb72760366b6284d348552f1c53f638c561820f34d76aa7c3eef3
font_01_sfnt_off0000fec1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEC1 10320 bytes
SHA-256: ea9888ae7f6877f026742fbc5962c6289944656143f9b2837fad062bbe59aace

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