Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa1e35666a8a84bd…

MALICIOUS

PDF

77.4 KB Created: 2021-01-06 16:56:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: 721a6973c01f41e88b7b7a12fb1541de SHA-1: 1d823086267f8abebe619fa4f0bb4b69b1efd533 SHA-256: fa1e35666a8a84bd5b56996d2d5e82e671cb9cb55472b7912ac67df170eb0a56
144 Risk Score

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://traffset.ru/shook?utm_term=steam+deals+free PDF link annotation
    • https://cdn.sqhk.co/jenotefi/hgdoGih/4060766319.pdfIn PDF document text
    • https://cdn.sqhk.co/wolitobutak/izhates/32941316334.pdfIn PDF document text
    • https://cdn.sqhk.co/gulifunanale/2HkJyAO/4061321093.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403415/normal_5f93d0f79400d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375086/normal_5f8c19745ba02.pdfIn PDF document text
    • https://cdn.sqhk.co/regavebike/ejgiUQG/life_is_strange_2_ost_mp3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421335/normal_5fe75372cf2ad.pdfIn PDF document text
    • https://rivakevalitute.weebly.com/uploads/1/3/0/8/130813818/jivoselogukakapuv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489414/normal_5fcbc6f58924d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452861/normal_5fdd3a8234369.pdfIn PDF document text
    • https://letazofuwukuge.weebly.com/uploads/1/3/4/8/134869061/4182938.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/b399b0ba-18e7-453c-9e9a-1655873f0585/tuvovelikinuxa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/56654561-ae76-4357-9ead-1bea09a1991f/what_is_the_best_reader_for_ipad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/20c7f37b-390a-4de7-b5f1-5416810ebdd8/the_skimm_liberal_or_conservative.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c5aa9594-763d-4de4-a917-c6ab80de9428/46298517209.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_off0000f22c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF22C 5156 bytes
SHA-256: 8307021fb878631426832559e4bab26f9ee284057881dcaf4a13d484c3f40d43
font_01_sfnt_off0001039c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1039C 11048 bytes
SHA-256: d2c999d209b30f8a3b966fecdfaa4483a9528a294269d745930f0395d1569f06