Malicious PDF — malware analysis report

Static analysis result for SHA-256 289f3499334640ca…

MALICIOUS

PDF

89.5 KB Created: 2021-02-06 14:04:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: c955192211eae8ffe0f143ad71a892c1 SHA-1: f8eaba6be209330de8d143ff457fcf5981bed644 SHA-256: 289f3499334640cadec04691a3a2c283015c6c50b91cff003ee7df1d77183a8f
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://seumenha.ru/wb?keyword=nespresso%20inissia%20user%20manual PDF link annotation
    • https://cdn.sqhk.co/susononuz/hjhcjad/91836170036.pdfIn PDF document text
    • https://radefikifuru.weebly.com/uploads/1/3/4/7/134723330/8671002.pdfIn PDF document text
    • https://cdn.sqhk.co/tinolaseja/jiVgdFy/traincontroller_9_gold_lizenzschlussel.pdfIn PDF document text
    • https://dutajidadu.weebly.com/uploads/1/3/4/7/134730474/xekulorikefisexu.pdfIn PDF document text
    • https://cdn.sqhk.co/somisafeg/53jeidM/22164523506.pdfIn PDF document text
    • https://nipetetoxijekuj.weebly.com/uploads/1/3/4/7/134718304/251511.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xakosafejel.epizy.com/zezim.pdfIn PDF document text
    • https://s3.amazonaws.com/julaxel/76697217629.pdfIn PDF document text
    • https://s3.amazonaws.com/wovisak/senior_financial_analyst_job_description_template.pdfIn PDF document text
    • http://vufuxit.epizy.com/73336515057.pdfIn PDF document text
    • http://fasilew.epizy.com/video_maker_windows_7_free.pdfIn PDF document text
    • https://s3.amazonaws.com/divelatoxa/workout_and_diet_plan.pdfIn PDF document text
    • https://s3.amazonaws.com/buxoparadazegu/pdf_redact_text_online.pdfIn PDF document text
    • http://vizebafep.epizy.com/time_me_am_pm_ka_full_form.pdfIn PDF document text
    • http://viwefar.rf.gd/ly_answer_wikipedia.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_off00011fbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FBF 4936 bytes
SHA-256: 804530a567ef4ac051ce895fc93cc034cb473dc8a1217f24013dad9188f1a480
font_01_sfnt_off00013072.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13072 11956 bytes
SHA-256: 02af291b0f4230c9bcb130d9c94f667a514889cdc52c0d94cac9e8f1e5c30543