Malicious PDF — malware analysis report

Static analysis result for SHA-256 e641cf363eac35a9…

MALICIOUS

PDF

71.4 KB Created: 2021-02-19 23:59:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: f663f933bf82aa6d2e41915ce5c79cd3 SHA-1: e0884a5a54e2fc94fd46b053c52fcad772e8b0c1 SHA-256: e641cf363eac35a91248324991a7f6b805590588d78e517f77d110dac920d655
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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.
  • 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://bologen.ru/123?utm_term=how+to+bulk+up+on+plant+based+diet PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4391642/normal_600968432f04a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420448/normal_6002632005775.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416305/normal_5fcb30b3c87b3.pdfIn PDF document text
    • http://xploitcrew.io/downhill_masters_mod_apk_rexdl6bnmx.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427504/normal_601448c9780a5.pdfIn PDF document text
    • http://help-igcopyright.xyz/kopoluwisivssifd.pdfIn PDF document text
    • http://stnold.com/83603669405lkst9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462073/normal_6012ce788e9a7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455380/normal_5fec0146a6070.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490736/normal_600d59397b152.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475588/normal_60171ff50c92a.pdfIn PDF document text
    • http://nesobaka3.xyz/19543388353v96fe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mezezix.rf.gd/burger_king_spicy_chicken_sandwich_calories_no_bun.pdfIn PDF document text
    • https://s3.amazonaws.com/puretulenuza/live_tv_guide_cairns.pdfIn PDF document text
    • http://dixolasafu.epizy.com/bibeli_mimo_free.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_off0000dbcd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBCD 5116 bytes
SHA-256: 4477cd37706d93bfe938fb10aab2371b9579d82d74771ee37f82ded1ad63fba0
font_01_sfnt_off0000ed4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED4D 10680 bytes
SHA-256: c5be81fcb6a9ffb2a32af595050f19d52fc87c6a620755749cb589e142b06b91