Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e4eb5c17460c669…

MALICIOUS

PDF

82.0 KB Created: 2021-03-22 09:00:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6b6d7261d4761ca477813b8dce3ed925 SHA-1: e2c85a86ff3fe7dbd9821a7b0f9866452cd45d8f SHA-256: 0e4eb5c17460c66991c3aa3d4e40c7b19d439c90199adb09ee708fe189e27d16
164 Risk Score

Malware Insights

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

The PDF contains numerous external links, a common tactic for link farms and phishing lures, as indicated by the 'PDF_SEO_LINK_FARM' heuristic. The ClamAV detection and ML classifier strongly suggest malicious intent, specifically phishing and trojan activity. While no scripts were directly extracted, the PDF structure and heuristics point towards a malicious document designed to trick users into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • 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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://soxebez.ru/123?utm_term=dashboard+template+free+bootstrap+4
    • http://7lessons.space/541796146686870z.pdf
    • https://cdn.sqhk.co/lelabepena/qPT4ib1/planetary_society_jobs.pdf
    • https://cdn.sqhk.co/pepitaji/b4dihjb/saveborusulorel.pdf
    • http://smartcoin.design/19290929402ih66c.pdf
    • https://cdn.sqhk.co/xijogedobu/hghjgcr/85690814805.pdf
    • https://cdn.sqhk.co/xuwadezab/2hjDKhb/tirulimawerazajaxuf.pdf
    • https://cdn.sqhk.co/rubuxupab/gib6idv/dragon_city_hack_games_free_download.pdf
    • https://cdn.sqhk.co/fujalapevame/jSjjQja/autumn_leaves_powerpoint_template_free.pdf
    • https://cdn.sqhk.co/bulixanejad/8n8dSVd/15569113016.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/008f93bd-50b6-40fc-9fda-5aab410e1c30/how_to_play_the_saran_wrap_gift_game.pdf
    • https://uploads.strikinglycdn.com/files/8312c357-c0f9-4cb9-8103-4e43dac0cb6b/intro_a_dressage_test_2020_uk.pdf
    • https://99470c7d-c692-4648-a7b8-36ea19db2883.filesusr.com/ugd/ab059d_ebcdb91bcef24a13a624c07d64f6d688.pdf?index=true
    • https://uploads.strikinglycdn.com/files/48eb1589-2257-4d48-abaf-c1abf2d12f4c/html_css_bootstrap_jobs_in_bangalore.pdf
    • https://7afcd0b8-98df-42a4-afe0-9544d44c9539.filesusr.com/ugd/74e9cf_528b11146bdf4133ba8b2a7211fc8030.pdf?index=true
    • https://uploads.strikinglycdn.com/files/3191a6c7-8bf0-4c39-9fb7-0de4f0005e97/71215172674.pdf
    • https://uploads.strikinglycdn.com/files/4096e82e-aea2-4ac6-844b-b3b744011de3/fios_router_connection_not_private.pdf
    • https://uploads.strikinglycdn.com/files/f297e493-8ff9-45dc-9afe-e58b018db20f/why_will_my_bluetooth_not_turn_on_mac.pdf
    • https://uploads.strikinglycdn.com/files/51fbc8d4-dd70-4277-ac2a-9d0a03943af7/30_under_30_awards_2019.pdf
    • https://uploads.strikinglycdn.com/files/d44e9559-c15d-473c-aaf0-67de67f1fbc9/what_are_examples_of_empty_calorie_foods.pdf
    • https://393102e6-89af-4738-8cad-89662dba8dc5.filesusr.com/ugd/33a16d_d8517538e83845aeb17f7ba9e12e9578.pdf?index=true
    • https://uploads.strikinglycdn.com/files/8edfd877-f981-411e-b2c0-92c0a22f1571/22535255644.pdf
    • https://uploads.strikinglycdn.com/files/a4f9aaea-5d05-421d-ae2a-f9e662b42158/may_2017_sat_reading_answers.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000101ea.bin
5660919101f1387b1d1a318eecfe89d3d2014dd64b898c7dcb982c74ce0b86d7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x101EA 5508 bytes
font_01_sfnt_off00011479.bin
ac6e943f5705b1f4949b74086d025120eb0c74ccfdf5d18dce2e90cdea895b7b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11479 11044 bytes

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