Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f8d03cba9c09df3…

MALICIOUS

PDF

72.4 KB Created: 2021-02-27 13:11:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 86ebbf9d918e82919a9d0b00f199dace SHA-1: ea5b484527738dc74843f1042fe6c7ca0e603d19 SHA-256: 1f8d03cba9c09df3a06d4a66a211a5bc5d8165b150d21466dfde9c39a6abacfc
196 Risk Score

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.
  • 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://leonvi.ru/wix?keyword=avatar+neytiri+height PDF link annotation
    • https://buvawaxeve.weebly.com/uploads/1/3/0/8/130874113/0e4a01f2e30.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368249/normal_601b557919883.pdfIn PDF document text
    • https://cdn.sqhk.co/jadepibake/eggDgiN/69146370251.pdfIn PDF document text
    • https://cdn.sqhk.co/kisesawaropo/FjjYXyN/stoney_s_pub_wilmington.pdfIn PDF document text
    • https://ritosigom.weebly.com/uploads/1/3/1/4/131453630/7560e437a42a4.pdfIn PDF document text
    • https://cdn.sqhk.co/figakeves/wwhcw2X/best_wood_cutting_laser_machine.pdfIn PDF document text
    • https://cdn.sqhk.co/munenetifu/chbNCnD/tanglewood_golf_course_milton_fl.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456116/normal_6013064de9cdb.pdfIn PDF document text
    • https://cdn.sqhk.co/nisugavu/K2midif/legak.pdfIn PDF document text
    • https://devudupaf.weebly.com/uploads/1/3/4/8/134880603/1fabc6df9787.pdfIn PDF document text
    • https://cdn.sqhk.co/ritasuxa/GiiLtHw/wa_sticker_packs_naruto_the_hokage.pdfIn PDF document text
    • https://kumakisatosoref.weebly.com/uploads/1/3/5/3/135328720/fitiwogiwerezij_bodoperuvu_poludavezaxewi.pdfIn PDF document text
    • https://cdn.sqhk.co/tefulobesa/aMieggi/mo_salah_messi_advert.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/metakibeme/15498749611.pdfIn PDF document text
    • https://s3.amazonaws.com/mojivikapeti/70605333404.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_off0000ddb8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDB8 4888 bytes
SHA-256: d6519defa6fbe433d13434b3ad63b26de41f00576ddde1f9979fed94b0a23235
font_01_sfnt_off0000ee66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE66 11516 bytes
SHA-256: 8ab82e01cbd9841e57599ecb06b1e637bdf1098851027a1f4b4a2b0b8b7ee435