Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2da8f9d8e4c490a…

MALICIOUS

PDF

75.0 KB Created: 2021-03-07 12:41:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 9f4d1b8250ae387746bdfd327cdd1c67 SHA-1: 4ee0531b24bdb313a682abc07a70bd2e02cec91b SHA-256: c2da8f9d8e4c490a8355b9dcd030055c2e1a878c11fdd5395286ede403f383d1
96 Risk Score

Malware Insights

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

The file was detected as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The presence of an embedded URI pointing to 'jumiwimov.ru' suggests an attempt to redirect the user to a potentially malicious site. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a phishing or malware distribution lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://jumiwimov.ru/wix?keyword=messiah+persona+3 PDF link annotation
    • https://cdn.sqhk.co/xubupigegi/h43gdlR/62497005852.pdfIn PDF document text
    • https://cdn.sqhk.co/zoluxoni/gknpkdP/kesabalokejapiribema.pdfIn PDF document text
    • https://cdn.sqhk.co/vuveleni/Sih6Rih/prepper_pantry_organization.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478398/normal_5fc84afa9c701.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407781/normal_601d861faf465.pdfIn PDF document text
    • https://cdn.sqhk.co/wusoxopejezo/gggjcUW/381728142.pdfIn PDF document text
    • https://cdn.sqhk.co/jabezoxujo/jzBigCV/kineta.pdfIn PDF document text
    • https://cdn.sqhk.co/zaviresodew/0hiagjc/helicopter_parents_meaning.pdfIn PDF document text
    • https://cdn.sqhk.co/togokitaz/i9gjEih/92654913953.pdfIn PDF document text
    • https://cdn.sqhk.co/bunewonu/cjcsM17/ftd_flowers_coupon_free_shipping.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386363/normal_603631993740d.pdfIn PDF document text
    • https://cdn.sqhk.co/gixotagokezu/cQ64KeT/mein_schiff_kreuzfahrt_karibik_2021.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/takateg/alphabet_cursive_writing_free.pdfIn PDF document text
    • https://s3.amazonaws.com/mefovu/lezexilewetixuwotudavavob.pdfIn PDF document text
    • https://s3.amazonaws.com/fokapikow/hungarian_dance_no5_sheet_music_for_violin.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_off0000eb2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB2B 5044 bytes
SHA-256: 32f3f420ebb43ec716642c2c37e9a04f28922b9f7de6efd5abdb4d7415cc0d1e
font_01_sfnt_off0000fc5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC5A 10340 bytes
SHA-256: 7a66c6d5ed1c74df82d4f4ab68484b5519b037a35686e2616e4a411e70628e3a