Malicious PDF — malware analysis report

Static analysis result for SHA-256 be8080260d57a4ce…

MALICIOUS

PDF

79.5 KB Created: 2021-02-07 03:13:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 84c962eccbe4a420ea2f4d56f2ce55ad SHA-1: c18878f8bc296f7be84ab3e6e826dfc9ad2d0014 SHA-256: be8080260d57a4ced96842ecd7124dcb62780a6b144b0a6bd4bccc06a6a53766
196 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
  • 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.
  • 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/aws?utm_term=minecraft+banner+template+photoshop PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4405642/normal_5ff6558ebe750.pdfIn PDF document text
    • http://nigasheff.xyz/229391025651728c.pdfIn PDF document text
    • http://quickpapp.online/lanosafojefitudofma8qe.pdfIn PDF document text
    • http://pixell.store/26904274697sj590.pdfIn PDF document text
    • https://repawuwo.weebly.com/uploads/1/3/5/3/135313919/d6e45bed2c48143.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455681/normal_6003a87d2f928.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484631/normal_5fffa323aa442.pdfIn PDF document text
    • http://nyvelsets.online/free_cracked_apk_storejmxi8.pdfIn PDF document text
    • http://potusowo.22web.org/b_b_ki_vines.pdfIn PDF document text
    • https://cdn.sqhk.co/sovokeduseb/hqeaRhi/6990058226.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/kujesulad/java_jdk_7_windows_zip.pdfIn PDF document text
    • https://s3.amazonaws.com/zodawanuror/46848190302.pdfIn PDF document text
    • https://s3.amazonaws.com/suxuzubojut/dragon_ball_z_saga_android.pdfIn PDF document text
    • https://s3.amazonaws.com/zinudipir/kimilamepegonikosu.pdfIn PDF document text
    • https://s3.amazonaws.com/nitatotol/bootstrap_4_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_off0000fa1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA1C 5400 bytes
SHA-256: 04cc91196c8f8fe57c289612f8aafcba82b97e7a911a84a0b98f09c12deaef48
font_01_sfnt_off00010c59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C59 10824 bytes
SHA-256: ac3b9a1030e9e3db4fb8165c6ef00ccf19147a7717987d5c09dfaf7b84554854