Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c8e084febb78d16…

MALICIOUS

PDF

69.7 KB Created: 2021-03-03 08:40:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 179db9d6d89dbe98c304a5d5fb86afb0 SHA-1: 5d217b5505952f89d040827933092876850a8a7d SHA-256: 4c8e084febb78d164208569c5312e9457737ccd706a3312d1a47fa8370de5a9a
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://zajinet.ru/award?keyword=saga+rules+1st+edition PDF link annotation
    • https://cdn.sqhk.co/xovepejegosi/gzjj2hg/58681357333.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421612/normal_601f549e3f79e.pdfIn PDF document text
    • https://cdn.sqhk.co/ruzudulo/MuqvRhe/boregovupoxosezudulidepil.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474727/normal_602d830905223.pdfIn PDF document text
    • https://cdn.sqhk.co/tuxogafu/jjibgiP/notetodo_note_to_do_list_app.pdfIn PDF document text
    • http://gojavodevagajuw.mygamesonline.org/11718501761.pdfIn PDF document text
    • https://cdn.sqhk.co/fimegasaz/gjRUHG9/spin_the_wheel_game_show_rigged.pdfIn PDF document text
    • https://cdn.sqhk.co/bodorosuzuta/ghPgjdZ/galaxy_on_fire_2_wikipedia.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478393/normal_600d66667281a.pdfIn PDF document text
    • https://cdn.sqhk.co/gapobuzijiru/gheQNBW/loki_heroes_of_mythology_pc_mods.pdfIn PDF document text
    • https://cdn.sqhk.co/sisagoku/aiaif0X/d_d_5e_beholder_types.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454302/normal_6031966078f34.pdfIn PDF document text
    • https://cdn.sqhk.co/nuzitomizaj/gg7gfif/41129097704.pdfIn PDF document text
    • https://cdn.sqhk.co/kimorotadopo/xjfkzV7/67514768121.pdfIn PDF document text
    • https://cdn.sqhk.co/gujowaxexag/5EgfCHF/huey_lewis_i_want_a_new_drug_meaning.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000d3b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3B9 5148 bytes
SHA-256: be7948f21a4eb73446ba327ea84295624c956aa090da9a7e580a4cdbcc17e3d1
font_01_sfnt_off0000e549.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE549 10732 bytes
SHA-256: 23332c584c51cba749d3b664eaa6e84babf4d6279a3f94d3812c4dc633cc4ac3