Malicious PDF — malware analysis report

Static analysis result for SHA-256 8480e644f8721582…

MALICIOUS

PDF

74.4 KB Created: 2021-01-15 15:20:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 2ef11634601d291dcbc9405a126e6b58 SHA-1: 6d2b526d8799d8fc095447da7678932edf8f9460 SHA-256: 8480e644f8721582d4770c4c66edf84cbb87c010000787e6f832f8acc804f4cf
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of an external URI suggests an attempt to redirect the user to a malicious site, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://traffnew.ru/aws?utm_term=3d+models+of+covalent+molecules+lab+answers PDF link annotation
    • https://site-1083792.mozfiles.com/files/1083792/blender_software_with_crack.pdfIn PDF document text
    • https://felepakupanemof.weebly.com/uploads/1/3/4/4/134473623/ad3db689.pdfIn PDF document text
    • https://site-1201795.mozfiles.com/files/1201795/nlp_representational_systems_test.pdfIn PDF document text
    • https://site-1178040.mozfiles.com/files/1178040/mla_citation_guide_8th_edition.pdfIn PDF document text
    • https://cdn.sqhk.co/fawabanof/MjdWqjf/50614435296.pdfIn PDF document text
    • https://cdn.sqhk.co/nogojexibawa/6jcUixe/shooting_times_duck_hunting_wisconsin.pdfIn PDF document text
    • https://site-1247557.mozfiles.com/files/1247557/balanced_diet_file.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/rokuwapesu/free_printable_alphabet_tracing_templates.pdfIn PDF document text
    • https://s3.amazonaws.com/ropidadegaxut/a2_movies_malayalam_2015.pdfIn PDF document text
    • https://s3.amazonaws.com/gumegulaxi/zosiginiwilevuvumugulino.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_off0000e631.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE631 5528 bytes
SHA-256: 35c6717b3cb090a54d837948c992804048389292d631ce6315f697160720b15f
font_01_sfnt_off0000f8f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8F9 10472 bytes
SHA-256: dc1ceb66baa0e24ff01eebd5e6345b7dec3c81cd7743f5775f406b21d4171ae0

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