Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0a25b240593a868…

MALICIOUS

PDF

73.0 KB Created: 2021-02-27 04:23:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 65d079098de2aed6c0b80b6df9336f24 SHA-1: e719430eabc6bf16e0111d98b8f4d7c130333037 SHA-256: e0a25b240593a86809dc2013e79b5bfe6cab723cd759ac1d35a8dca2a9cdc67d
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://botokaw.ru/award?keyword=garmin+forerunner+405+gps+watch PDF link annotation
    • https://cdn.sqhk.co/kimejijomaki/XjdbjgW/bojukut.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466398/normal_600922ab1db16.pdfIn PDF document text
    • https://cdn.sqhk.co/pujixefan/R4qidhd/15636590934.pdfIn PDF document text
    • https://cdn.sqhk.co/jigekuragige/4ih03jb/fofiwozevisol.pdfIn PDF document text
    • https://cdn.sqhk.co/kukisigafumi/ijiggjf/patanjali_yoga_sutras_sanskrit_documents.pdfIn PDF document text
    • https://cdn.sqhk.co/wubunepan/hbhhghe/gujegowebegatudedarod.pdfIn PDF document text
    • https://cdn.sqhk.co/moromasi/ggGITie/gorilla_diet_in_zookeeper_movie.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370528/normal_5fdaf7d2283f7.pdfIn PDF document text
    • https://jesipawuba.weebly.com/uploads/1/3/0/8/130874316/gobesijis.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412592/normal_5ff7f695ef4d1.pdfIn PDF document text
    • https://cdn.sqhk.co/vibisidumes/4AA2jig/pipisowejuzakimilelim.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wizasagi.rf.gd/99772822406.pdfIn PDF document text
    • http://xidijunuv.rf.gd/barubakutadabiwafimet.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_off0000dfbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFBF 5872 bytes
SHA-256: d9f501fbb26277f7f7e1e872d4a8b4374b0ad16ad731d7570a4b54b65d01f85f
font_01_sfnt_off0000f3b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3B7 10368 bytes
SHA-256: 347e3a4ba6cafb8e74cba0cd01febfd1dd9c3aa9708aa6f8c15c446a209f8a04