Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca4d7eeb5ab0f5f9…

MALICIOUS

PDF

66.6 KB Created: 2021-04-02 16:06:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fef21dcca847d378530e6a44eaaaa285 SHA-1: 74bd4118ce2fc10b268f4e57394dc1ca95fb0058 SHA-256: ca4d7eeb5ab0f5f9ce521bc76af0c6785a5c5f175894b0f635e75a5ee7a9de4c
212 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file contains a large number of embedded links, many of which point to known malicious redirectors or are part of a link farm designed to manipulate search engine results. The ClamAV detection and ML classifier further indicate malicious intent, likely phishing or malware distribution. No scripts were extracted, but the primary attack vector appears to be directing users to malicious external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9859

Heuristics 4

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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=rationale+zahlen+addieren+pdf
    • https://cdn.sqhk.co/pesofesidoke/mgitIIj/red_button_meme_sonic.pdf
    • http://vasamekekegu.iblogger.org/73560641364.pdf
    • http://sizijevoji.iblogger.org/do_carbonyl_groups_form_hydrogen_bonds.pdf
    • https://cdn.sqhk.co/gisatajofo/gicc6hw/parkour_race_free_run_game_apk_uptodown.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://0eaabcdb-938a-45a6-85a3-1a7d796bbcdd.filesusr.com/ugd/8d6d25_4ffe00a1a601482da61d0ff90eccb328.pdf?index=true
    • https://s3.amazonaws.com/varoximu/how_to_connect_lg_inverter_direct_drive_washer.pdf
    • https://uploads.strikinglycdn.com/files/b5d034ad-e1f7-47ee-a830-f9bbf63638b0/89393664726.pdf
    • https://uploads.strikinglycdn.com/files/0a5a9241-abc6-45a2-bd69-d03c7e4543fc/if_two_players_have_2_pairs_who_wins.pdf
    • https://s3.amazonaws.com/genijusemu/37784631759.pdf
    • http://kewuzelaxapog.rf.gd/nikon_dx_35mm_1.8_g.pdf
    • https://uploads.strikinglycdn.com/files/c7d5106a-27c6-44ea-89cd-28f7c80775cf/5e_campaign_books_ranked.pdf
    • https://s3.amazonaws.com/bepukuba/numerologia_cabalistica_significado_dos_numeros.pdf
    • https://s3.amazonaws.com/numunenoji/kenopo.pdf
    • https://314a97e4-cc7b-499c-a999-42b15fb65c39.filesusr.com/ugd/fa4a73_c80a71484f624d23bb3cb4abebf4238c.pdf?index=true
    • https://uploads.strikinglycdn.com/files/e291215e-937f-4846-8184-2e455e15334f/jadawatew.pdf
    • https://s3.amazonaws.com/resisuna/how_to_turn_on_york_diamond_80_furnace.pdf
    • https://uploads.strikinglycdn.com/files/a47a0bb3-4a11-402b-84dd-dd90531f9959/who_is_lucifer_in_bible_malayalam.pdf
    • https://42cc6f6d-9125-48bc-bce4-1bf15f49b1be.filesusr.com/ugd/7c30af_fd23108bc15b49c9924af3f210674aff.pdf?index=true
    • https://7fca5364-97a1-4441-b76e-d2c429a59218.filesusr.com/ugd/735424_4980330f9ced4c68b51d0bb06010c431.pdf?index=true
    • https://6b2f37ea-3696-4b87-858b-663c379f6f6f.filesusr.com/ugd/16879a_d100a251af9d4f15a9aca531f6834063.pdf?index=true
    • https://39ad70c8-6a03-4de2-a89b-b0209cba5754.filesusr.com/ugd/d2759c_a5da9729598d421a8ada754540eef248.pdf?index=true
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eed2.bin
da1a00562b81be52b7f9f7ad9c1d066d8ed13efca61f7505905f90272d58d048		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEED2 4796 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.