Malicious PDF — malware analysis report

Static analysis result for SHA-256 69572771d09d01d6…

MALICIOUS

PDF

77.7 KB Created: 2021-03-04 10:16:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: eed5aeb8333c5f59407102b2500371aa SHA-1: ed4e418bacc7acac8268729b5528a049022fe251 SHA-256: 69572771d09d01d69fd42a7e9da45f57fa71e0a209febb1f5db727fa5a69664e
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://vilenefex.ru/award?keyword=continents+and+oceans+practice+worksheet PDF link annotation
    • http://fajujefa.getenjoyment.net/72573945161.pdfIn PDF document text
    • https://cdn.sqhk.co/kimefutif/41jiNjf/pidedumipenotetuvosemakuj.pdfIn PDF document text
    • https://cdn.sqhk.co/kubepugemaki/idgcOgh/undercover_agent_action_movies.pdfIn PDF document text
    • https://tunomofezu.weebly.com/uploads/1/3/2/3/132303147/dibevexetiz-gitib-nulosevux-raxuzefanariw.pdfIn PDF document text
    • https://rurevudo.weebly.com/uploads/1/3/4/2/134265418/7045932.pdfIn PDF document text
    • http://prostotit.site/zoxewvxopy.pdfIn PDF document text
    • https://sejevijuwev.weebly.com/uploads/1/3/2/7/132712154/050867dd162b5.pdfIn PDF document text
    • http://betmoy57.com/xipuw228xk.pdfIn PDF document text
    • http://lenulari.mypressonline.com/kejuvanabusip.pdfIn PDF document text
    • https://cdn.sqhk.co/zosiwikiw/fieXigd/98586900269.pdfIn PDF document text
    • https://xekuruwagimutuz.weebly.com/uploads/1/3/2/6/132696141/dapupopolitun.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/donake/lowegexolabelusonuva.pdfIn PDF document text
    • https://s3.amazonaws.com/bubodeliza/jifazosewogatisujonuxib.pdfIn PDF document text
    • https://s3.amazonaws.com/zuwosil/xaxukijusigufata.pdfIn PDF document text
    • https://s3.amazonaws.com/wefadep/the_strangest_secret_by_earl_nightingale_download.pdfIn PDF document text
    • https://s3.amazonaws.com/mozirolinitaje/rewom.pdfIn PDF document text
    • https://s3.amazonaws.com/devuxuzejozam/20050753460.pdfIn PDF document text
    • https://s3.amazonaws.com/gapivegek/daxeparufo.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_off0000f4ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4EE 5192 bytes
SHA-256: bcae120919c5e01746f424b2078b86a7bffdfda48f7c34f5084ec9a236b302d4
font_01_sfnt_off000106a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106A1 10212 bytes
SHA-256: 1b8999da79137b2ff1a892c2bccf3272457a2dadc79eef8651452902ce7d2992

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