Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff81bace06a0cae6…

MALICIOUS

PDF

73.4 KB Created: 2021-04-07 16:18:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 7529f63c7620185ea004307b010d87cd SHA-1: 9de525fe2272e661f38fa24c4b64f85173772e1e SHA-256: ff81bace06a0cae6ae611896d205dda2988c695c24914e955677b1d4278dd171
186 Risk Score

Malware Insights

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

The PDF contains numerous external links, many hosted on disposable domains, suggesting a link farm or phishing operation. The presence of a ClamAV detection for 'Pdf.Phishing.Trojan' and ML classification strongly indicate malicious intent. The document body, though heavily obfuscated, appears to be a lure related to 'Disney plus roku 2 xd', directing users to external URLs for further action.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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.
  • 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://jacksth.ru/wix?keyword=disney+plus+roku+2+xd PDF link annotation
    • https://jasoveloxera.weebly.com/uploads/1/3/5/9/135967924/453941de62.pdfIn PDF document text
    • http://rotawafuwuno.scienceontheweb.net/forex_pin_bar_strategy.pdfIn PDF document text
    • http://vufajed.getenjoyment.net/taraji_p_henson_around_the_way_girl.pdfIn PDF document text
    • https://cdn.sqhk.co/vufebevefo/iiZjgjj/free_mini_golf_scorecard.pdfIn PDF document text
    • https://burojupudigi.weebly.com/uploads/1/3/5/9/135990051/6939497.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488837/normal_603c1e598e9c7.pdfIn PDF document text
    • https://xaxarudo.weebly.com/uploads/1/3/0/7/130740130/d92eed58ca.pdfIn PDF document text
    • https://cdn.sqhk.co/zonelatu/gc5Qxhj/sizizojatuliji.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383687/normal_5fdfc1585bb98.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tikimiwuwal.myartsonline.com/mogonoxed.pdfIn PDF document text
    • http://danebusuji.onlinewebshop.net/tarot_aleister_crowley_espaol.pdfIn PDF document text
    • https://8eccd3b7-fb20-4588-a5b5-4d8c58591879.filesusr.com/ugd/0e6328_a891f49aa2ab46288d8b8c727fa9f0b7.pdf?index=trueIn PDF document text
    • https://2b81f3f0-3f46-42ff-87a7-5865dd96cd3c.filesusr.com/ugd/fb41f9_16ff24b61c6a43f9a184159f98d381a8.pdf?index=trueIn PDF document text
    • https://a179b4bb-f9e1-4b0b-8685-f881d2afde68.filesusr.com/ugd/0fdb6d_8ee5479f2f7d4d409075dea0d79bc537.pdf?index=trueIn PDF document text
    • https://5a995288-ce6f-4ae3-a3e6-14272d8003db.filesusr.com/ugd/7be1cd_7d4fbccf96424097ac0fd0db1ab76e96.pdf?index=trueIn 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_off0000e268.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE268 5108 bytes
SHA-256: 9cf662ce70e1443579b4610185d47a37476e3f8fb05ffb258a247015b609df05
font_01_sfnt_off0000f3ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3ED 10932 bytes
SHA-256: 2108910ef5c0c626dc7057711a77b60a16c9d6cc4cc4ff11d4627cfd5add1f52

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