Malicious PDF — malware analysis report

Static analysis result for SHA-256 7dc42db1bce340d0…

MALICIOUS

PDF

83.9 KB Created: 2021-04-13 05:25:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: b73e3eb33496ca9f933715fedeeb80f4 SHA-1: 2c7f37347482349389076dba2d5e716dfbf100aa SHA-256: 7dc42db1bce340d004de5f648ecd5d213372628491e46bbee6e4c6ef5c38dedd
96 Risk Score

Malware Insights

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

The file is a PDF document that contains a lure related to Christian doctrines, which is highly suspicious. It embeds a URL pointing to a suspicious domain, likely intended to host a malicious payload or redirect the user to a phishing site. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://baarspo.ru/strik?utm_term=what+are+the+doctrines+of+christianity PDF link annotation
    • http://mivolamuzimapu.22web.org/63674870848.pdfIn PDF document text
    • http://notidokamokuz.22web.org/poxexojidomida.pdfIn PDF document text
    • https://cdn.sqhk.co/fafujedajir/jihgisD/dungeon_defenders_awakened_ps4_store.pdfIn PDF document text
    • https://cdn.sqhk.co/woguwubege/ggfOgjg/addition_worksheets_for_grade_r.pdfIn PDF document text
    • http://kadesevi.iblogger.org/red_black_tree_in_data_structure.pdfIn PDF document text
    • https://cdn.sqhk.co/tutadazi/JggvijY/72629795622.pdfIn PDF document text
    • https://cdn.sqhk.co/gubisagebuto/ghhegdx/wisilijuweduromeraram.pdfIn PDF document text
    • https://cdn.sqhk.co/fisejadiruw/hXihgha/vigipexadopoludozilokur.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zokitamuna.epizy.com/34806619201.pdfIn PDF document text
    • https://s3.amazonaws.com/jifedefujodu/timesheet_calculator_with_lunch_breaks.pdfIn PDF document text
    • http://janojunotoz.epizy.com/27666017792.pdfIn PDF document text
    • http://nilizepukufiz.epizy.com/animals_name_in_tamil_and_english.pdfIn PDF document text
    • https://s3.amazonaws.com/migivewuwe/47928744374.pdfIn PDF document text
    • https://s3.amazonaws.com/jaxesabi/85440649259.pdfIn PDF document text
    • https://s3.amazonaws.com/perurulexi/fivurosaminivobi.pdfIn PDF document text
    • http://nifiloxoburufi.rf.gd/durubaladamozib.pdfIn PDF document text
    • https://s3.amazonaws.com/gupojakami/how_to_find_the_bond_angle_of_a_molecule.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3a6abe8a-822b-40ac-9ce2-f24d61e1741e/tukakupazafatanawus.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d5c97d7-e9fb-4cef-86c3-50deb2523d0c/42821806066.pdfIn PDF document text
    • https://s3.amazonaws.com/wuxupewu/tupefutaf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4fb46fcf-ee60-4e11-bc34-8e6035e3dcab/yurbuds_leap_wireless_earbuds_-_womens.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7d9234c4-032d-4ee3-9b15-219d33ee99cc/rousseau_discourse_on_the_origin_of_inequality.pdfIn PDF document text
    • http://dufeniwa.rf.gd/8910396872.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_off00010ab3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AB3 5192 bytes
SHA-256: 534d3c7b774b9a9f6b8418605bdde7e1831ec5b6b1834a7520738e38335e5bd1
font_01_sfnt_off00011c6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C6E 10476 bytes
SHA-256: 270699e75124132550f3f57ace78970878d9c321a290f1fa94ed230d46322555

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