Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0eef248c1f75ece…

MALICIOUS

PDF

77.1 KB Created: 2021-04-04 17:03:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: e2d199c21ff0eda8fa892c57750f7394 SHA-1: 29aa6160987b50175b395411da87dffd659bd67f SHA-256: b0eef248c1f75ece1da86f10dde513f13a66bec4c51f7559e173ac559de622e7
186 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 hosted on disposable domains or link farms, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The embedded URLs are likely used to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://fokemale.ru/aws?utm_term=cu%25C3%25A1nto+son+150+g+en+mililitros PDF link annotation
    • https://pebenari.weebly.com/uploads/1/3/4/5/134518206/c94872e665826.pdfIn PDF document text
    • https://walanugenaxoduf.weebly.com/uploads/1/3/5/9/135964425/403753.pdfIn PDF document text
    • http://ruvikuvi.mywebcommunity.org/83588926542.pdfIn PDF document text
    • http://sayseedokg.com/xabifegekibuz4.pdfIn PDF document text
    • https://kufidadifijerid.weebly.com/uploads/1/3/1/4/131407945/3421557.pdfIn PDF document text
    • http://modebedunizux.iblogger.org/close_to_you_carpenters_chords.pdfIn PDF document text
    • https://lidutefavova.weebly.com/uploads/1/3/4/0/134012516/vuxofebew.pdfIn PDF document text
    • http://kulanefimolon.mypressonline.com/john_deere_mowers_prices_brisbane.pdfIn PDF document text
    • http://trend-sales.fun/bhavesh_joshi_full_movie_in_300mbwhbd1.pdfIn PDF document text
    • http://geosen.net/715168319330z020.pdfIn PDF document text
    • http://giftcard-sale.store/800991406933ec3q.pdfIn PDF document text
    • https://talupujepanuzan.weebly.com/uploads/1/3/4/5/134595677/1872673.pdfIn PDF document text
    • http://swiss-gear-top.xyz/what_is_stormy_weathers_real_namey7tz1.pdfIn PDF document text
    • https://bixixadapi.weebly.com/uploads/1/3/5/3/135321875/lasanepupabuvu-raxotizan-butizef.pdfIn PDF document text
    • https://jebezefekoju.weebly.com/uploads/1/3/4/7/134737834/8979451.pdfIn PDF document text
    • http://topvideo.design/67585883082tah1s.pdfIn PDF document text
    • http://13millions.store/lenovo_yoga_730-_13ikb2i8sz.pdfIn PDF document text
    • http://ketousa.site/60371535201gescx.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rorodev.rf.gd/wififezemekeboveki.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_off0000eab6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAB6 5252 bytes
SHA-256: 50b977a1a1aa612bf9b7611e44ce545581599cff555672556c07a76b286848f8
font_01_sfnt_off0000fc81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC81 12536 bytes
SHA-256: 25f49a045adaee561651d9ba6afe2099ac54f2a3d6168e765f3dc4fe3568b442

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