Malicious PDF — malware analysis report

Static analysis result for SHA-256 c82c80bb5b2b6a7c…

MALICIOUS

PDF

71.3 KB Created: 2021-03-23 00:14:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d4bc4091e69c082c8b1b6cc8e12fa444 SHA-1: 75ecff331b68984209866f64d380088946cd03d0 SHA-256: c82c80bb5b2b6a7c94be26f01b2a116e1cdb24dab85af2fde67b7eadd1a4236a
96 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for an external URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, contains text related to property searches, suggesting a lure. The presence of embedded URLs and the ClamAV detection strongly indicate malicious intent, likely to redirect users to a phishing site or download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://botokaw.ru/wix?keyword=ashland+county+auditor+ohio+property+search
    • http://lumufurisazela.mywebcommunity.org/jumowoj.pdf
    • http://lopekojupapo.22web.org/3171207146.pdf
    • http://vizimuvorogo.22web.org/live_bus_times_app_android.pdf
    • http://bibivire.mygamesonline.org/caperucita_roja_de_los_hermanos_grimm_original.pdf
    • http://nepizomojafedez.22web.org/online_application_form_of_punjab_university.pdf
    • http://tizeteleke.22web.org/aptitude_questions_on_trains_with_solutions.pdf
    • http://mekifaremijes.iblogger.org/ssc_biology_notes_in_english.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/devuxuzejozam/nixitoxakiz.pdf
    • http://lenunefejoj.rf.gd/one_way_anova_questions_and_answers.pdf
    • http://fuxazulofonu.epizy.com/probleme_avertissement_utilisation_donnes_android.pdf
    • http://dativolulonal.epizy.com/how_many_universal_gates_are_there.pdf
    • http://buxazub.epizy.com/47865785075.pdf
    • https://s3.amazonaws.com/rokuwapesu/addition_facts_worksheet_first_grade.pdf
    • http://wafubarig.epizy.com/vigaboxulojamotutulif.pdf
    • http://xotaferuju.myartsonline.com/mailchimp_tutorial_2020.pdf
    • https://uploads.strikinglycdn.com/files/af593d19-1033-4d17-a01e-377f45cb1697/the_yearling_1994_full_movie.pdf
    • http://judejelalub.rf.gd/gukuju.pdf
    • https://uploads.strikinglycdn.com/files/7df6227b-dce0-4976-991e-19b94b693d1c/how_many_drops_of_essential_oil_in_a_5ml_bottle_doterra.pdf
    • https://uploads.strikinglycdn.com/files/289c006a-b9a8-4249-ac6c-83bbbffdabd0/menewujusujamevivuzotag.pdf
    • http://posojorodinu.epizy.com/88404108205.pdf
    • https://uploads.strikinglycdn.com/files/674fc10e-8902-4d13-8a32-ae48ebf82728/54352929964.pdf
    • http://wikilupari.epizy.com/hot_blast_wood_furnace_setup.pdf
    • http://nagikesedogoru.rf.gd/moluzivumiwurosom.pdf
    • https://uploads.strikinglycdn.com/files/4875767e-e88d-4574-9201-69be05613601/sri_vishnu_sahasranamam_telugu_download.pdf
    • 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_off0000d763.bin
f94d0dfd09b0a73bf869e3c0a998c81414e0eb7a4c005a7955ef76fcfdf04b20		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD763 5252 bytes
font_01_sfnt_off0000e941.bin
862879d0c52afce9936bb88ddbfbd1e3884c687c853b353eaed64d335898f39f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE941 11152 bytes

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