Malicious PDF — malware analysis report

Static analysis result for SHA-256 30acf0b159190861…

MALICIOUS

PDF

115.2 KB Created: 2021-04-07 15:43:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 8eb645437b41d72ace5e10662810b89d SHA-1: aebdfd3552e3e5590ddc27e97eadfde3ef623ece SHA-256: 30acf0b159190861efb165f51580bc5f97e9501660db2b7c944f28a54ac16a59
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to disposable hosting and are flagged as link farms. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The document body, though heavily obfuscated, suggests a lure related to 'Estructura agraria y clases sociales en m 9xico pdf', directing users to external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9899

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
  • 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://pelibifir.ru/award?keyword=estructura+agraria+y+clases+sociales+en+m%25C3%25A9xico+pdf PDF link annotation
    • http://indonesia2health.online/14275844740lpwy3.pdfIn PDF document text
    • http://cashbackk.site/counter_terror_apk_modo1v4b.pdfIn PDF document text
    • https://cdn.sqhk.co/dudumadopole/xVieggc/molotujata.pdfIn PDF document text
    • http://levupag.22web.org/mibom.pdfIn PDF document text
    • http://hh666o.site/driver_theory_test_questions_and_answers_2018paip6.pdfIn PDF document text
    • http://dithetsen.xyz/crackle_app_download7cq27.pdfIn PDF document text
    • http://jinevul.mygamesonline.org/estimation_and_costing_b_n_datta.pdfIn PDF document text
    • https://cdn.sqhk.co/takularozo/djbeMCl/steven_universe_save_the_light_walkthrough_strawberry_battlefield.pdfIn PDF document text
    • https://cdn.sqhk.co/repejuvovod/ggVjbja/the_bowery_myrtle_beach_age_limit.pdfIn PDF document text
    • http://jedusajinud.mygamesonline.org/ge_xl44_oven_specifications.pdfIn PDF document text
    • https://cdn.sqhk.co/pepupiribojo/ghbjcNy/war_with_grandpa_parents_review.pdfIn PDF document text
    • http://vowewudimo.mypressonline.com/html_file_input_only.pdfIn PDF document text
    • https://cdn.sqhk.co/xadelakora/jhcbijM/sleeping_dogs_definitive_edition_ps4_trophy_guide.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://5e6d3f51-9b35-4a29-baf4-1f036254a461.filesusr.com/ugd/99a8f2_e226da6983dd4c288821397984beac0b.pdf?index=trueIn PDF document text
    • https://2f2ab42d-e0b4-4bd3-aa50-2430da1ff5fc.filesusr.com/ugd/eaf48f_ce985a23338544c38fe3fe7201a44e94.pdf?index=trueIn PDF document text
    • http://sakikuzugodo.rf.gd/consciousness_definition.pdfIn PDF document text
    • http://zavinawotomuvef.epizy.com/classical_music_sites.pdfIn PDF document text
    • http://lurolubudoruk.onlinewebshop.net/dulixinivalo.pdfIn PDF document text
    • https://37bcb4aa-7747-4ff6-a352-0e22bf983c21.filesusr.com/ugd/4393d3_a9d206980bdf4025810787c39d0b901f.pdf?index=trueIn PDF document text
    • https://5f384421-c3d0-4b4c-85a6-d3745974446f.filesusr.com/ugd/40006b_74a5450c405a421bbd687db004a3a91d.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/lixisariwulo/39365863846.pdfIn PDF document text
    • https://s3.amazonaws.com/tiluwisulepam/adobe_analytics_training.pdfIn PDF document text
    • http://misovin.epizy.com/fonig.pdfIn PDF document text
    • https://s3.amazonaws.com/davolazupivowi/how_long_does_hamburger_jerky_take_in_a_dehydrator.pdfIn PDF document text
    • https://7f793f8f-877f-420e-851b-8bae9ea62a4d.filesusr.com/ugd/78c764_28a0be5455bb4c6e8a46ed8539aa9092.pdf?index=trueIn PDF document text
    • http://dawozisi.rf.gd/14257207923.pdfIn 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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00015dfa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15DFA 5628 bytes
SHA-256: 81d0155dca1288780cd8b7d9f5d2d0377a12b7ebe8c8846b20b5a107d9dcc7e3
font_01_sfnt_off000170c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x170C6 12492 bytes
SHA-256: 41fc288f27cfe7fd728c51d800d53a08744fc42aa7f56d70d2206e79b865dbb5
font_02_sfnt_off000198bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x198BD 16204 bytes
SHA-256: a95eff378c135b1ab40d10b3cd1da1bafbc07f86005f57898d079c90d712ddbd
font_03_sfnt_off0001adea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1ADEA 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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