Malicious PDF — malware analysis report

Static analysis result for SHA-256 03a710bdffb95337…

MALICIOUS

PDF

67.9 KB Created: 2021-02-26 23:03:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 89bb1270bd67ced30680f124fc78fb76 SHA-1: 0d8f4e9f3fbb1b9a7cf0ec6ac92e3d4b7c74a447 SHA-256: 03a710bdffb95337cfe7f4a86692479459d76aacc83e344a0391d4cc0e6044ec
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://baarspo.ru/wix?keyword=star+trek+into+darkness+download+openload PDF link annotation
    • http://zijimesaxa.iblogger.org/ninuladenason.pdfIn PDF document text
    • https://riwipawubo.weebly.com/uploads/1/3/1/4/131453561/timiboxop.pdfIn PDF document text
    • http://lunatan.medianewsonline.com/how_a_bill_becomes_a_law_philippines.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/selivuvumepaveb/ahmedabad_university_form_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/nademopor/45289305430.pdfIn PDF document text
    • https://s3.amazonaws.com/xovajukoxin/forest_bharti_2019_maharashtra.pdfIn PDF document text
    • http://sabiwilurase.atwebpages.com/bukotoxodopawo.pdfIn PDF document text
    • https://s3.amazonaws.com/risalenefazozo/intro_to_chemistry_final_exam_study_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/wujanozo/desktop_background_hd_images_free.pdfIn PDF document text
    • https://s3.amazonaws.com/saziwijaxodav/judirato.pdfIn PDF document text
    • https://s3.amazonaws.com/vojapu/zoxupikoxad.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_off0000cda1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDA1 5212 bytes
SHA-256: 5941ccca2948b110bea5f76b443d091bea1a65dbf6630897f3f3632ddb9e3a5a
font_01_sfnt_off0000df80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF80 10308 bytes
SHA-256: 7c169158df4d5b52eb3f78374594513e82982c2502bdba25f5b1b137585b7a55