Malicious PDF — malware analysis report

Static analysis result for SHA-256 70ed00dd5e01f375…

MALICIOUS

PDF

310.9 KB Created: 2021-03-30 14:58:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 810634b751ff503a34d7f07b705f3be9 SHA-1: 206c497a599eca7df7867c29913600017d1e5faa SHA-256: 70ed00dd5e01f37542bc51ee44f7b5ebe6a11cf2ba109421687c9bd72c0bbc00
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI that mimics a search result for a free guide, likely intended to trick the user into downloading a malicious file. ClamAV detection and ML classification strongly indicate malicious intent. While no scripts were directly extracted, the PDF structure and embedded URLs suggest it's part of a phishing campaign designed to deliver further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9907

Heuristics 4

  • 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://bologen.ru/wix?keyword=leed+core+concepts+guide+v4+pdf+free
    • http://frankiearvelo.com/xilod84m8u.pdf
    • https://cdn.sqhk.co/niripakexad/Ugck8xi/big_bang_theory_robot_evolution_t-_shirt.pdf
    • https://cdn.sqhk.co/bijininabex/1jehf3k/86061271875.pdf
    • http://joxezorov.mywebcommunity.org/titijidep.pdf
    • http://zefefiwova.medianewsonline.com/44144192780.pdf
    • https://cdn.sqhk.co/woxiwovar/iqlhalY/the_trip_series_vs_movie.pdf
    • http://tibijosetinaj.getenjoyment.net/anne_bradstreet_poetry.pdf
    • https://cdn.sqhk.co/vizakifito/ghgfvjq/used_car_dealerships_near_me_under_7000.pdf
    • http://select-get.top/8299746333q0ndr.pdf
    • http://itagreen.fun/53528889117hayri.pdf
    • http://tavafotuzefox.sportsontheweb.net/bethesda_clinical_hematology.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://fea50346-ab34-4b67-843e-90a6383c4983.filesusr.com/ugd/bf678e_0f6fb19c7cfe4870b73eb9eea4008218.pdf?index=true
    • http://gituloropo.rf.gd/dozinizisabiv.pdf
    • http://maveropewavofu.rf.gd/sofezozobezadewifipined.pdf
    • https://uploads.strikinglycdn.com/files/8a590a43-38a2-4420-8376-51c0c1737cfa/datamax_oneil_i_class_4208_manual.pdf
    • https://uploads.strikinglycdn.com/files/366156da-58f2-404c-b166-4b29b492c9c1/nanizen.pdf
    • http://puwaviferu.rf.gd/church_annual_report_template_word.pdf
    • https://4ad55601-b8ab-4ae0-bc0e-e90069072326.filesusr.com/ugd/3aca14_fbc025dbf1194e138c3eeb09d871f0c7.pdf?index=true
    • http://bewaxupu.rf.gd/informacion_sobre_aurelia_velez_sarsfield.pdf
    • http://molagegivijoxu.onlinewebshop.net/oxford_word_skills_intermediate_free_download.pdf
    • https://uploads.strikinglycdn.com/files/c2d2e850-ee4a-4f77-be3e-c77e05bd4e07/how_to_build_a_manual_wood_splitter.pdf
    • https://76c9fb28-c10e-4950-85be-37de24a2ede8.filesusr.com/ugd/fa32a6_3a1eeabf9d564d69878c676d00b7bcd3.pdf?index=true
    • 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_off00048f38.bin
189b0cf9573ee185d114dfeeb9ab117dbe548419e3e3ab8231ba04e922662e04		 pdf-font-stream PDF embedded font (sfnt) at offset 0x48F38 5168 bytes
font_01_sfnt_off0004a0f6.bin
0350d23e410e4ae7e1b0087ff5cc8b6b1153eba3f42461792b4034a9b4f48bee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4A0F6 13256 bytes

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