Malicious PDF — malware analysis report

Static analysis result for SHA-256 abeb0e21d0cf7f6f…

MALICIOUS

PDF

70.7 KB Created: 2021-02-24 12:40:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: d498c81cb389cf9115f4a40623dcb74e SHA-1: 2e4bde3304d0112f3645ac28b34b5b597fffd130 SHA-256: abeb0e21d0cf7f6f7dc24026333581f7b132f4159d7690d5e66c80570f43ad91
204 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 7

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://jacksth.ru/wix?keyword=manual+freestyle+freedom+lite PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366313/normal_602fb523950df.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391024/normal_5fd36da0df427.pdfIn PDF document text
    • https://migawonakizize.weebly.com/uploads/1/3/1/6/131637147/dukilizilaxovo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476590/normal_602aae9290ca9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393776/normal_5ff6ad174daf6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456998/normal_6002d6cc8c28e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474734/normal_5fc80d20dbd16.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/matogapibelifiv/ultrasound_guided_left_breast_biopsy_cpt_code.pdfIn PDF document text
    • https://s3.amazonaws.com/fakuguvil/income_affidavit_format_in_marathi.pdfIn PDF document text
    • https://s3.amazonaws.com/fajetufekejo/bbc_iplayer_vpn_not_working.pdfIn PDF document text
    • https://s3.amazonaws.com/vunizi/nubixemitaxutefopunarek.pdfIn PDF document text
    • https://s3.amazonaws.com/meludav/dupizewiv.pdfIn PDF document text
    • https://s3.amazonaws.com/sorapobuk/69809799872.pdfIn PDF document text
    • http://texokobatogu.epizy.com/what_is_a_gimp_ahs.pdfIn PDF document text
    • http://wefulipov.epizy.com/95923689081.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_off0000d8c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8C9 5160 bytes
SHA-256: e76d0bdf291090fdeebe066604020c550d18c7234184edf2a1b8bfff706ee4e4
font_01_sfnt_off0000ea59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA59 10620 bytes
SHA-256: 4382d08179f0e85a5382fd9169312db6d17ba6bfda30ef66c59ee8fed45a773a

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