Malicious PDF — malware analysis report

Static analysis result for SHA-256 954ef1132b4f5d41…

MALICIOUS

PDF

64.9 KB Created: 2021-02-23 20:36:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 9a1081bc16902ebc279d84e8fe270bf1 SHA-1: 33c75a1136492b4db60528e9d4dbdb3caae57c74 SHA-256: 954ef1132b4f5d4112d94a1faab811ab6fb48b8246bdf7ac758cb17a61731cfa
216 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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://seumenha.ru/wix?keyword=hbs-800+headset+manual PDF link annotation
    • https://nepefesin.weebly.com/uploads/1/3/1/4/131410606/naxome-xuranesegikom-mavesezawibaru.pdfIn PDF document text
    • https://fazokovonopa.weebly.com/uploads/1/3/5/3/135329702/xamip-penivusetoj-kigid-zabanaku.pdfIn PDF document text
    • https://fapezadedafax.weebly.com/uploads/1/3/4/6/134609176/kagozo-karumew-kewuvid.pdfIn PDF document text
    • https://nakotugobal.weebly.com/uploads/1/3/5/3/135300729/f2ec4a25.pdfIn PDF document text
    • https://totujefova.weebly.com/uploads/1/3/4/0/134096099/nemidojelitekuvifo.pdfIn PDF document text
    • https://movireralu.weebly.com/uploads/1/3/4/8/134879142/kafeneforixojema.pdfIn PDF document text
    • https://tikoresi.weebly.com/uploads/1/3/0/7/130775690/lagawubazagabopa.pdfIn PDF document text
    • http://mkr-olimp.info/1916259339j1yi.pdfIn PDF document text
    • https://xagapetudiza.weebly.com/uploads/1/3/4/6/134686513/torugovume-jawiwif-vuvaluduvowifo.pdfIn PDF document text
    • https://fulojexerewo.weebly.com/uploads/1/3/5/3/135345176/8380555.pdfIn PDF document text
    • https://tugizikorosizo.weebly.com/uploads/1/3/4/5/134502987/3376700.pdfIn PDF document text
    • https://kizerovum.weebly.com/uploads/1/3/4/7/134747257/2108321.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://puzexexaniledow.epizy.com/30821666632.pdfIn PDF document text
    • https://s3.amazonaws.com/pafexegud/freenas_ftp_setup_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/dezajok/72739562263.pdfIn PDF document text
    • https://s3.amazonaws.com/sobaketemu/rca_android_tablet_wifi_authentication_problem.pdfIn PDF document text
    • https://s3.amazonaws.com/bisapovepizaj/mary_poppins_returns_movie_reviews.pdfIn PDF document text
    • http://gasukexopesifu.epizy.com/concatenate_in_sap_crystal_reports.pdfIn PDF document text
    • http://xufenazaliwe.epizy.com/how_to_control_pump_speed.pdfIn PDF document text
    • https://s3.amazonaws.com/ropuba/67876511437.pdfIn PDF document text
    • http://simipibenafar.epizy.com/27375096580.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_off0000c134.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC134 5440 bytes
SHA-256: 43dc1d0d1602c21c018623712a5ee962659eaab3623d69d9357e8d999f975241
font_01_sfnt_off0000d38d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD38D 10276 bytes
SHA-256: 95fe365d05a9961399d6065292e5125b4701bcc8f1625eb62b864a2105f7c0ac