Malicious PDF — malware analysis report

Static analysis result for SHA-256 f06a8383d840cdb2…

MALICIOUS

PDF

79.2 KB Created: 2021-05-04 12:05:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 1c4d9c40ccd9b24f06feb2faba43199d SHA-1: 1dc3717d3fb1e1f9821827393a93b6799355dc29 SHA-256: f06a8383d840cdb22404b7fadebb26a4e555ce1b4bbffd02a041a566a2ee0210
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that leads to a suspicious domain, likely intended to host a phishing page or a further stage of malware. The document body, though heavily obfuscated, suggests a lure related to economic development grants.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://gimoguvi.ru/strik?utm_term=economic+development+grants+texas PDF link annotation
    • http://tulutita.sportsontheweb.net/difference_between_classification_and_clustering_in_data_mining.pdfIn PDF document text
    • https://miperodijazef.weebly.com/uploads/1/3/4/3/134308013/f2d81c.pdfIn PDF document text
    • http://rivoduzajoki.iblogger.org/jess_glynne_rather_be_piano_sheet_music.pdfIn PDF document text
    • http://vogudikomi.getenjoyment.net/va_citrix_access_university_of_wisconsin.pdfIn PDF document text
    • http://tonojodozif.mypressonline.com/kitigitiponez.pdfIn PDF document text
    • http://gekodejevotug.medianewsonline.com/penatalaksanaan_acne_vulgaris.pdfIn PDF document text
    • https://tukumexof.weebly.com/uploads/1/3/4/7/134721389/8422959.pdfIn PDF document text
    • https://diporatefumidal.weebly.com/uploads/1/3/4/4/134489634/zagizigekoxadez_wijete.pdfIn PDF document text
    • http://tumuduwaju.mypressonline.com/business_information_system_lecture_notes.pdfIn PDF document text
    • http://tulavesew.getenjoyment.net/fiponaxurupezosa.pdfIn PDF document text
    • http://kebotup.66ghz.com/64813046739.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tanazutoja.rf.gd/the_big_short_film_watch_online.pdfIn PDF document text
    • https://s3.amazonaws.com/falufusu/google_play_store_review_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/tidigudetefumof/bleach_mobile_3d_apkpure.pdfIn PDF document text
    • https://s3.amazonaws.com/xuzed/indirect_coombs_test_procedure.pdfIn PDF document text
    • http://wezobezovuxasav.rf.gd/soxadunutizaweb.pdfIn PDF document text
    • http://lejominikezig.rf.gd/83026503378.pdfIn PDF document text
    • http://nadezuj.epizy.com/writing_down_the_bones_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/nijosinizo/metro_2035_ending_reddit.pdfIn PDF document text
    • https://s3.amazonaws.com/fajeloninesitel/charlie_and_the_chocolate_factory_full_movie_1971.pdfIn PDF document text
    • http://fumibilulad.atwebpages.com/zirujogajo.pdfIn PDF document text
    • http://xolevusafo.myartsonline.com/73616994562.pdfIn PDF document text
    • http://mugomodag.atwebpages.com/kowijusaji.pdfIn PDF document text
    • http://bazolajeruda.rf.gd/how_to_setup_turtle_beach_elite_pro_on_pc.pdfIn PDF document text
    • http://mulisemovilunud.epizy.com/14834816770.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f6f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6F6 5476 bytes
SHA-256: 08d80890f98ba5497c66dc0d45ca6363429b20fe7ebb7a4b7a206292932d561d
font_01_sfnt_off00010994.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10994 11144 bytes
SHA-256: 2baa601dc1aa49dbe519b4077788224b7c34e780cfc01ea056f50e4a345a27b8

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