Malicious PDF — malware analysis report

Static analysis result for SHA-256 aad6cd60a51bd651…

MALICIOUS

PDF

77.3 KB Created: 2021-02-21 13:49:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 962afcbcdd4563ab53e7213356747c13 SHA-1: 6cd263e828cb122badd80b2d496cf3bd4c6887e4 SHA-256: aad6cd60a51bd6512593fcb844dfd900420b08950efa87997d4bec7fdb4e9c25
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://jottigo.ru/wix?keyword=real+mathematical+analysis+pugh+solutions+manual PDF link annotation
    • https://cdn.sqhk.co/jarogofef/jgjdTgh/99757207245.pdfIn PDF document text
    • http://7lessons.fun/free_download_asia_empire_2027_mod_apkungm7.pdfIn PDF document text
    • https://cdn.sqhk.co/leperanurosi/j6ifjb7/93032781526.pdfIn PDF document text
    • https://cdn.sqhk.co/gefisodir/fhgRzYa/julipulawegax.pdfIn PDF document text
    • https://cdn.sqhk.co/limizolaxa/jJmRhe7/apple_text_message_tone_download.pdfIn PDF document text
    • https://cdn.sqhk.co/tememagitapo/hcjdjhv/dawilalogulir.pdfIn PDF document text
    • https://cdn.sqhk.co/bogulevim/aGAEgcr/tizusabaluruzelono.pdfIn PDF document text
    • https://cdn.sqhk.co/lidupusumoj/gdthcyd/.pdfIn PDF document text
    • https://cdn.sqhk.co/mukujoripu/rijG9id/mifomogupimopikazuzusudi.pdfIn PDF document text
    • https://cdn.sqhk.co/kixalixu/ijgugev/xatowudinalino.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/rupatojuko/97551604163.pdfIn PDF document text
    • https://s3.amazonaws.com/jigezilor/microsoft_powerpoint_themes_free_2007.pdfIn PDF document text
    • https://s3.amazonaws.com/retisovojor/appvn_apk_7._0a.pdfIn PDF document text
    • https://s3.amazonaws.com/runuzitexokol/89622797139.pdfIn PDF document text
    • https://s3.amazonaws.com/fogibi/xiweguwujunon.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_off0000f29d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF29D 5360 bytes
SHA-256: 90b20a0e62a747ed7d0e4f41f6bb58276e1ece36a2f170be837ed42e0ce5764d
font_01_sfnt_off000104c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104C5 10400 bytes
SHA-256: 1fc5b4c3734c12fd0c44eee61422c1b968174a0416bb9993a5f1ed455b46ade9