Malicious PDF — malware analysis report

Static analysis result for SHA-256 235e668630d3bd89…

MALICIOUS

PDF

47.8 KB Created: 2020-10-26 06:01:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: dcdf9940a0390fc1de10f449f9f0eb8b SHA-1: e76e53f6a9895c1c43c37e23703ebb919c58aafe SHA-256: 235e668630d3bd89f2daa504981ae89afb4672add3de66387db6321e4f525a1d
154 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a link farm, suggesting an attempt to distribute malware or lead users to phishing sites. The primary lure appears to be a fake game download. The ML classifier strongly indicates malicious intent, and the presence of numerous external links points to a coordinated distribution effort.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ttraff.me/pify?keyword=rebel+racing+game+download+for+android In PDF document text
    • https://tubenuluni.weebly.com/uploads/1/3/1/4/131437864/db079000aba5e26.pdfIn PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/wirexanusir.pdfIn PDF document text
    • https://laxuruvu.weebly.com/uploads/1/3/1/4/131482832/711824.pdfIn PDF document text
    • https://papunagaku.weebly.com/uploads/1/3/1/3/131384156/pobudobuguwag-titunerogarof-wijup.pdfIn PDF document text
    • https://zizuralozirufu.weebly.com/uploads/1/3/1/4/131483034/soposaxovuj.pdfIn PDF document text
    • https://povutepumik.weebly.com/uploads/1/3/2/7/132741486/wigunopel.pdfIn PDF document text
    • https://kizujaxaluw.weebly.com/uploads/1/3/4/3/134393650/mutotabezowusovixamu.pdfIn PDF document text
    • https://tesewipelevifiv.weebly.com/uploads/1/3/3/9/133997178/1ca490b6e2.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/6431815.pdfIn PDF document text
    • https://tipefejiri.weebly.com/uploads/1/3/0/9/130969755/65100f.pdfIn PDF document text
    • https://jubunukaf.weebly.com/uploads/1/3/1/4/131483214/fepopasumufir_tesurom_wanalazakemu_pesubatarazadix.pdfIn PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/kirorafagosox.pdfIn PDF document text
    • https://fulipevaxavu.weebly.com/uploads/1/3/2/6/132695351/9997097.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/58cbba9e-b8e2-46d1-9936-7a5dbcc4e268/97329530176.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b9fb21e-8a1e-4a2c-80f6-f84c5de56462/67878588486.pdfIn PDF document text
    • https://s3.amazonaws.com/kudefem/catalogo_avon_campaa_13_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/kakef/tuvorile.pdfIn PDF document text
    • https://s3.amazonaws.com/baposivarabuj/xetewuvaxufokabimoxulas.pdfIn PDF document text
    • https://s3.amazonaws.com/xipavir/indication_of_cesarean_section.pdfIn PDF document text
    • https://s3.amazonaws.com/jedaxopopuko/alexis_de_tocqueville_french_revolution.pdfIn PDF document text
    • https://s3.amazonaws.com/lokijuronig/38239583188.pdfIn PDF document text
    • https://s3.amazonaws.com/tajimipojimo/tooth_autotransplantation.pdfIn PDF document text
    • https://s3.amazonaws.com/vidadaviwal/metabolisme_vitamin_larut_lemak.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006735.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6735 3608 bytes
SHA-256: 72b6a30dcc6597b744885b6facd11acea7be6817de885b13d7294dff42fb53f9
font_01_sfnt_off000073f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73F8 5404 bytes
SHA-256: befd0182a95a86f3e703c0b833f3505d448c485e326130470f6ab7694d80c8f9
font_02_sfnt_off00008652.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8652 14744 bytes
SHA-256: 4e131619b95e2d014978bd82104c74ef98a47ae79b0b228b810943b4dea27eb8