Malicious PDF — malware analysis report

Static analysis result for SHA-256 484eb729bd5c867d…

MALICIOUS

PDF

79.0 KB Created: 2021-07-12 22:03:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 0e4f05fbb0c9f33ff50d5b64e73ca63e SHA-1: a2f37ea936ba3f62b1c8d0818adfde7c916ed132 SHA-256: 484eb729bd5c867df322d5ef7a50b51a66321e23746b9cc6258d00cff241af8a
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI that mimics a search result for a 'free PDF editor', suggesting a social engineering tactic to trick users into clicking the link. While no scripts were directly extracted, the nature of the detection and the embedded URI point towards a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://feedproxy.google.com/~r/sq/ugae/~3/4aHNpQc2m6I/square?utm_term=free+pdf+editor+download+for+windows+xp
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ec7a0220781e4bb11ae563/1626110466536/17349372934.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e888b287b051427c55f90c/1625852082518/20403394514.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e82d284454ab0ddd893e63/1625828648862/jaxava.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e78ceeefb14d11220c7b9d/1625787630673/how_to_make_green_paint_without_blue.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e77931860dc56574a36a2d/1625782578029/pifozas.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec819abdd82073f6fede3e/1626112410267/august_act_date.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e922a266be7e490f0fa98f/1625891490502/cost_of_labor_and_delivery.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e927e866be7e490f0fd9ed/1625892841156/16951573971.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ec7b26a1f8f93f64aaec03/1626110758917/lidaz.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ec91a051a87c5d75acff84/1626116512918/xeroron.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec8a5c288cf71862aa403d/1626114653148/64356210901.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec912c4f2b1c51afa4d63b/1626116397225/zezulojoritilori.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ec8f5958d864752e01ef1a/1626115929527/what_makes_someone_bisexual.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e940be2210ba6bce131cf6/1625899198860/symbol_and_referent.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://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d56c.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD56C 16792 bytes
font_01_sfnt_off0000ed83.bin
e3e53d5f8690d04f21b142431bbb9014b9490f6b08ae00bcfc59e83fdb5e1c90		 pdf-font-stream PDF embedded font (sfnt) at offset 0xED83 10656 bytes
font_02_sfnt_off00010610.bin
85eb062c184ff889e69021412d85200f47723def2c92068335360c651cee5397		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10610 15984 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.