Malicious PDF — malware analysis report

Static analysis result for SHA-256 307335d5c0ab404a…

MALICIOUS

PDF

70.4 KB Created: 2021-02-25 19:09:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: d36854377402abf1864f1f6ab8516c45 SHA-1: 7f810e340776b3df57891653e781d7c3f2a941e6 SHA-256: 307335d5c0ab404aaf994fa2f9ce463bf5d806ae78140d83728e2a1894cb21e5
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/award?keyword=tafsir+hamka+juz+30+pdf PDF link annotation
    • https://cdn.sqhk.co/jupujezaxa/id6QggZ/maserati_quattroporte_2014.pdfIn PDF document text
    • https://nugijokokul.weebly.com/uploads/1/3/0/9/130969158/zoboxijulaxor_puduvumajimu.pdfIn PDF document text
    • http://mazanatur.space/collage_maker_free_online_no_registrationt9b8j.pdfIn PDF document text
    • http://lesantyqas.online/what_is_deprivation_of_liberty_lawful_and_unlawfulrkvzv.pdfIn PDF document text
    • https://cdn.sqhk.co/nuzozuni/hOFhfI0/60598174706.pdfIn PDF document text
    • https://lixubirenolona.weebly.com/uploads/1/3/4/6/134669397/dizinulogovatewajedu.pdfIn PDF document text
    • http://damvglaz2.xyz/48401284932aav6e.pdfIn PDF document text
    • http://fb-copyright-help-from.com/skype_terbaru_2019cdqdz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://simalivalobo.rf.gd/basiwokorebitorobizubu.pdfIn PDF document text
    • https://s3.amazonaws.com/zuguvoxoki/bosch_dishwasher_sms66gi01i_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/fizufapu/flight_pilot_simulator_3d_game.pdfIn PDF document text
    • http://puwawujabewup.rf.gd/55484708938.pdfIn PDF document text
    • https://s3.amazonaws.com/levumoduf/asuran_full_theme_bgm_free.pdfIn PDF document text
    • https://s3.amazonaws.com/sitozi/vivosusidifam.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c027.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC027 5692 bytes
SHA-256: 29ad40c0a85fb00ad656b2e2bcb31aad15e0b758f3ab29f6f85c8e7a8efed64b
font_01_sfnt_off0000d370.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD370 10220 bytes
SHA-256: 398e82bd7a47b39e10e878e20bced9424755ea46d18604b1b74aaca3e25d1745
font_02_sfnt_off0000f6b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6B2 16480 bytes
SHA-256: aa271c9f2f3e85516b55a12ca92b26b3ee0fdcce37f7f3758cce62b90f278e4c