Malicious PDF — malware analysis report

Static analysis result for SHA-256 700ca57eb050d3ef…

MALICIOUS

PDF

71.4 KB Created: 2021-03-05 07:11:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 61ac213cbf73f5ee30bb250db65dd284 SHA-1: 3d11970a7ef0b0890f6ed5889ad8f975ad5cdc7d SHA-256: 700ca57eb050d3ef4f6394561c14c9b82a72154cf752346f19c10133c61e3523
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://kuzutuzo.ru/award?keyword=wonder+rj+palacio+audiobook PDF link annotation
    • https://roxamemimo.weebly.com/uploads/1/3/4/5/134589570/8851432.pdfIn PDF document text
    • https://jobifavizatop.weebly.com/uploads/1/3/4/1/134108852/tujejujezu_lowinoboli_wogadiziped.pdfIn PDF document text
    • https://kidenido.weebly.com/uploads/1/3/1/6/131636891/4598534.pdfIn PDF document text
    • http://zufabud.22web.org/66950492171.pdfIn PDF document text
    • https://vesabigixovo.weebly.com/uploads/1/3/1/8/131857304/a2611.pdfIn PDF document text
    • https://bijejumutitin.weebly.com/uploads/1/3/1/4/131454352/maroronumif-konilinekar-vakudesamozoko.pdfIn PDF document text
    • https://suwelebebos.weebly.com/uploads/1/3/5/9/135959353/a871a2896.pdfIn PDF document text
    • http://ligugiban.scienceontheweb.net/79925950702.pdfIn PDF document text
    • http://deliwubavamir.mypressonline.com/what_fish_finders_are_compatible_with_minn_kota_terrova.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/lixisariwulo/jikuge.pdfIn PDF document text
    • http://sagapuxoxonigig.epizy.com/nikon_dslr_camera_ebay_uk.pdfIn PDF document text
    • https://s3.amazonaws.com/julexekubaj/earl_nightingale_lead_the_field_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/wutisigila/child_care_centre_daily_routine.pdfIn PDF document text
    • http://gukerarewaf.epizy.com/xugubowu.pdfIn PDF document text
    • https://s3.amazonaws.com/xovajukoxin/jifulegutobum.pdfIn PDF document text
    • https://s3.amazonaws.com/lawakux/remawom.pdfIn PDF document text
    • https://s3.amazonaws.com/rawesaragegugar/outlook_address_book_the_operation_failed.pdfIn PDF document text
    • https://s3.amazonaws.com/tikoweravisixu/how_to_clean_sunbeam_pro_steam_iron.pdfIn PDF document text
    • http://gugefojekasarul.epizy.com/endocrine_system_webquest_answer_key.pdfIn PDF document text
    • http://jozixal.epizy.com/lirarizi.pdfIn PDF document text
    • http://rofuvawitarul.atwebpages.com/dipop.pdfIn PDF document text
    • https://s3.amazonaws.com/muvazi/fesavaru.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_off0000dc24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC24 5180 bytes
SHA-256: e96eef7fccfd8ca030d4ea60cd7c532547013fb8db1e895ee7cdd700449a71df
font_01_sfnt_off0000ede0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDE0 10072 bytes
SHA-256: 12649bfd6abbab01ea0c4a5e94f46ffa7df33bdf23897494ab4e08a36c8c06ab