Malicious PDF — malware analysis report

Static analysis result for SHA-256 a699aebf25601a7b…

MALICIOUS

PDF

63.4 KB Created: 2021-03-02 03:59:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: d58f03e2994bd282bcd352767b4c2034 SHA-1: 013e083d02cdf3209a077ae2f600176f331e7026 SHA-256: a699aebf25601a7bfcfe753aa97fd9034c900d181188133b859b1e9a6c0d9442
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/award?keyword=the+water+is+wide+james+taylor+tab In PDF document text
    • https://cdn.sqhk.co/fagojefavap/idhhajF/26892397665.pdfIn PDF document text
    • https://kebonipima.weebly.com/uploads/1/3/0/7/130740513/jumef-pirij.pdfIn PDF document text
    • https://zujakeme.weebly.com/uploads/1/3/4/0/134041616/besona.pdfIn PDF document text
    • https://cdn.sqhk.co/netimawifes/f1QnieN/55789746887.pdfIn PDF document text
    • http://vuvulusigi.scienceontheweb.net/vowesuzejagak.pdfIn PDF document text
    • https://cdn.sqhk.co/daladovum/iijjcSn/ea_sports_ufc_2_ppsspp_download.pdfIn PDF document text
    • https://cdn.sqhk.co/nupepewomaxu/IheATXc/tikotaguzelovavutigafes.pdfIn PDF document text
    • https://cdn.sqhk.co/rekubapapup/GF9ijdJ/sausage_jump_fun_adventure_running_game_show.pdfIn PDF document text
    • http://rumurel.mywebcommunity.org/34270190040.pdfIn PDF document text
    • http://vajesafosedepur.mywebcommunity.org/which_of_the_following_best_describes_the_probability_characteristic_of_money.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://litufowanukoro.epizy.com/55902497217.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_off0000bd71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD71 5424 bytes
SHA-256: d5da320b9d6cfa4d5ab28d8afc2c6cd4b0f64c1e5765b385c605cfd6bbd9ca1e
font_01_sfnt_off0000cfcc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFCC 9648 bytes
SHA-256: 6c27c248ad778f62c0b5b2b97a262759e96fdddc7ce478df158d038539549f6c