Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f0d6cee8ce17df5…

MALICIOUS

PDF

97.3 KB Created: 2021-04-29 14:33:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: b4c33e5c21ed160128e193d34da064ab SHA-1: 05e9094225e5aa31c3881606f6338c0074c00ca5 SHA-256: 9f0d6cee8ce17df56c082aaea1362bdc2b7451d13b8d8a2743a9d79c49183978
126 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs, with a high heuristic indicating it functions as a link farm on disposable hosting. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution. The document body, though heavily obfuscated, contains keywords related to scholarship essays, serving as a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9897

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://lozipotod.ru/strik?utm_term=scholarship+essay+examples+about+yourself PDF link annotation
    • http://vemelaribox.getenjoyment.net/5741956591.pdfIn PDF document text
    • http://br1.red/vegozopirlbrn.pdfIn PDF document text
    • http://winwites.space/wulebadesizezunegoxijezuv9okqh.pdfIn PDF document text
    • http://50offit.pro/92608099311kgwfd.pdfIn PDF document text
    • https://cdn.sqhk.co/jebavimot/ia6Ucie/girlfriend_plus_hack_apk_0._4._5.pdfIn PDF document text
    • http://bidetoluji.getenjoyment.net/why_was_the_book_the_bluest_eye_banned.pdfIn PDF document text
    • https://cdn.sqhk.co/medijamowole/hbuhfhd/moxoreragegonixuv.pdfIn PDF document text
    • https://cdn.sqhk.co/bitowiso/3rgfuha/disney_sorcerer_s_arena_best_team.pdfIn PDF document text
    • http://girepodemaz.getenjoyment.net/employees_provident_fund_scheme_1952_form_19.pdfIn PDF document text
    • http://tukameduk.22web.org/madamekujotusexerusojefu.pdfIn PDF document text
    • https://cdn.sqhk.co/vumuwilaj/0VjbMDE/how_to_big_game_hunter_rs3.pdfIn PDF document text
    • https://cdn.sqhk.co/rokijatu/jcyhhnu/portal_gun_mod_minecraft_1._7_10_download.pdfIn PDF document text
    • http://bukapim.mywebcommunity.org/les_nergies_renouvelables_au_maroc_2020.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://regipikiwubadov.epizy.com/dorena_lake_fishing_report.pdfIn PDF document text
    • http://molujafit.atwebpages.com/12_bar_blues_chords.pdfIn PDF document text
    • http://pubitawiwinas.rf.gd/how_to_thank_someone_for_taking_care_of_you.pdfIn PDF document text
    • https://s3.amazonaws.com/jarirotexab/98110499421.pdfIn PDF document text
    • https://e590c0d9-b694-44fb-9862-47327b30d8b0.filesusr.com/ugd/89363e_9a965637ebc04307827e35d38ae89357.pdf?index=trueIn PDF document text
    • https://bad3f395-1638-4667-b349-d6f934eeab49.filesusr.com/ugd/ed2d23_4bb78a13e4444cc48f6f3978da44df92.pdf?index=trueIn PDF document text
    • https://5a1138df-423b-4a5d-a7c7-36223740754e.filesusr.com/ugd/a72fa8_dffe39a80bbe465b9e197f66071739c8.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/pipaneku/kedakejabexi.pdfIn PDF document text
    • http://lekowezitodog.rf.gd/28756246311.pdfIn PDF document text
    • https://7f993087-45f6-41f4-96e5-9dcaca18fb91.filesusr.com/ugd/9a92dd_64f39072fa28445b821f418f7ee9fdfa.pdf?index=trueIn PDF document text
    • http://wavusuwu.epizy.com/pneumonia_treatment_guideline_idsa.pdfIn PDF document text
    • https://s3.amazonaws.com/pewebopufupe/shorter_catechism_with_scripture_proofs.pdfIn PDF document text
    • https://dd907c4b-492b-4b4d-bf3c-9f0b7a2bd2c7.filesusr.com/ugd/96a426_853b58b1009e40b39c1a0099ee2d80d3.pdf?index=trueIn 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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn 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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001032a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1032A 6568 bytes
SHA-256: 2ba6e0c4516ae528974428ab90d2fcb845e31fc6427c3681d976df34e50bf0fe
font_01_sfnt_off00011377.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11377 5668 bytes
SHA-256: 63614f89342706c9e4271d3c921ad5d6ca67868ec224fee27398fc3a3b93d78a
font_02_sfnt_off0001269a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1269A 4716 bytes
SHA-256: 2392d4450c129db93c341a725ac835626167201adb5bd6186867cc9b89ae0607
font_03_sfnt_off0001385d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1385D 11188 bytes
SHA-256: 316b3f8c89a06428585c163241e0eea21d31386650917160d299f6b78dc58c34
font_04_sfnt_off00015e86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15E86 16328 bytes
SHA-256: 32362d95ce3a35bef881ff27b397db6d8c2d35b21e97311c1757a59ad9e071b3

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