Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1d0ca6c65f9920e…

MALICIOUS

PDF

79.6 KB Created: 2021-03-15 06:42:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 92404eafcfeb9c76b5b0fb30ff91e310 SHA-1: 73c39dc453d2f81c3b4a6a008d324421068d54de SHA-256: d1d0ca6c65f9920e65724550621fbc9a8b4b55cbb096bc08527ac68378cbaecd
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, many of which are part of a link farm designed to appear as legitimate content. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically identified as phishing. The embedded URLs, such as 'https://jumiwimov.ru/wix?keyword=wsop+chip+generator+2020', suggest a lure related to online gaming or scams.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jumiwimov.ru/wix?keyword=wsop+chip+generator+2020
    • https://cdn.sqhk.co/fewibefanid/Lkhgjrq/duddu_my_virtual_pet_game_download.pdf
    • https://dubitofux.weebly.com/uploads/1/3/4/4/134458445/doponipuz.pdf
    • https://cdn.sqhk.co/mekaxosur/9xvgiaC/bingo_pinball_machines_for_sale_uk.pdf
    • https://bajorenurelop.weebly.com/uploads/1/3/0/7/130739037/buzupozuwape-megefimo-pebukenukubadel.pdf
    • http://masozaxo.22web.org/what_is_another_name_for_a_breakfast_nook.pdf
    • https://kijidagidopijub.weebly.com/uploads/1/3/0/7/130776406/8672314.pdf
    • https://cdn.sqhk.co/mudebijutene/c2RihYM/road_to_nowhere_crash_relic.pdf
    • https://xajuvafi.weebly.com/uploads/1/3/4/6/134634088/00322a5d.pdf
    • https://cdn.sqhk.co/feketukadoz/cjcZja1/australian_ice_hockey_league_results.pdf
    • https://cdn.sqhk.co/votiwixuduzo/bZAiegi/97838415214.pdf
    • http://teagreen.space/the_crossing_definitionl6ws7.pdf
    • http://gnoogle.site/vaaste_song_lyrics_bestwapyp2v8.pdf
    • https://cdn.sqhk.co/mikedeto/ji6DXtX/58066811901.pdf
    • https://watinadapazibe.weebly.com/uploads/1/3/4/4/134492378/tapegiwa.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://1058d175-53f8-4d86-9201-ae9c1fc74009.filesusr.com/ugd/62a633_4404184ec8fe4a4c86df415d41f9a85f.pdf?index=true
    • http://waxusumuguk.epizy.com/berakujaxegil.pdf
    • https://ebc1add8-0b9d-418e-9e4a-1e287827e933.filesusr.com/ugd/ab63e3_ba7af33ad649438c803491c97a7f4ce5.pdf?index=true
    • https://e3055f73-6236-423b-b810-4bc1a15f300f.filesusr.com/ugd/fa12d1_117f6caaae8341f4ab1d3bacf78fc2c1.pdf?index=true
    • https://49d0234c-aae4-472d-9cb9-6192e9e03354.filesusr.com/ugd/a63595_1a19199512db4daea4d8a6faad25de8d.pdf?index=true
    • https://5e0c4d4d-41f9-428c-9564-b93e7cff6769.filesusr.com/ugd/510691_880fac1b9b4e4b98a643405ac5929f58.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • https://bit.ly/398J0CMW
    • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e8d3.bin
a3c4914608ad8f46b4be33557c10eeb1322bf7461943a3ccf0370108c22c9b50
pdf-font-stream PDF embedded font (sfnt) at offset 0xE8D3 5236 bytes
font_01_sfnt_off0000fa9e.bin
fa3c09718529cdd695d1cd13eb14f16d8d5013f2c0208a45ad2a4058331df493
pdf-font-stream PDF embedded font (sfnt) at offset 0xFA9E 11384 bytes
font_02_sfnt_off000121c2.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361
pdf-font-stream PDF embedded font (sfnt) at offset 0x121C2 4324 bytes