Malicious PDF — malware analysis report

Static analysis result for SHA-256 ddca549eb68fcea7…

MALICIOUS

PDF

75.4 KB Created: 2021-03-03 08:13:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: d9467ea2feb583264fef1798bbbaab87 SHA-1: ff4344d364bb44a0bf6617426a7cab2d442867c3 SHA-256: ddca549eb68fcea74e6269c64eddfafc0af8f391d881d2c32a1994272b120345
196 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
  • 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://dugedepap.ru/award?keyword=bob%2527s+burgers+synchronized+swimming+transcript PDF link annotation
    • https://cdn.sqhk.co/vomuvojovi/ggwYngf/islands_happy_hour_menu_prices.pdfIn PDF document text
    • https://cdn.sqhk.co/mugolino/b1awhja/44729972257.pdfIn PDF document text
    • https://cdn.sqhk.co/sazalevimit/gjjemCB/history_of_nigeria_navy.pdfIn PDF document text
    • https://cdn.sqhk.co/dagorabowixu/hgichhd/friends_tv_show_quiz_and_answers.pdfIn PDF document text
    • http://nipokaxa.getenjoyment.net/50917852667.pdfIn PDF document text
    • http://banademebilite.sportsontheweb.net/t.i._-_dead__gone_ft._justin_timberlake_traduo.pdfIn PDF document text
    • https://cdn.sqhk.co/nivunufozub/ZJ7hcic/figixawinevefonenalovet.pdfIn PDF document text
    • https://cdn.sqhk.co/mubasetopagu/cghcjgi/escape_alcatraz_game.pdfIn PDF document text
    • https://vufuredupe.weebly.com/uploads/1/3/0/7/130776381/lemujidewol.pdfIn PDF document text
    • https://cdn.sqhk.co/vabalogu/gji5jbu/under_a_spell_layer_cake_fabric.pdfIn PDF document text
    • https://cdn.sqhk.co/gikunixa/giAhdZA/bounty_hunt_western_duel_game_mod.pdfIn PDF document text
    • https://cdn.sqhk.co/tizuvuwo/hgeS6vS/79137241700.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vavixava.rf.gd/65434041590.pdfIn PDF document text
    • http://doroxokile.epizy.com/wilson_bureaucracy.pdfIn PDF document text
    • http://kirezujanavibos.epizy.com/vubasufoxuf.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_off0000e678.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE678 5924 bytes
SHA-256: e18c76c1d5e1356598cab3d2da3a8381e5076cbcac4abc053cc3fccbcf765983
font_01_sfnt_off0000fa9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA9F 11352 bytes
SHA-256: 9c9f7d48c6b1d7bd843ca0a25d0c1965a672db620e734bbe98a5f0ad176f25b6