Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a44ebaa8815b596…

MALICIOUS

PDF

584.0 KB Created: 2021-07-16 01:03:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 1c144a0897ea2abe2ec3408e966726cb SHA-1: 182b9b5bbc5a95f36d3ec533ab3de5074982eb00 SHA-256: 6a44ebaa8815b596c649af6ae18fb06747ddeb13ce5c79c21615fc99d5aae5f5
114 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The document exhibits characteristics of an advance-fee scam, using urgency lures and language related to large sums of money and parcel delivery. While no scripts were extracted, the PDF structure and heuristic firings strongly suggest a phishing or scam attempt. The ClamAV detection further supports its malicious classification.

Machine Learning

  • Nyx PDF Classifier clean score 0.0129

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/RVI1sXQGPkU/square?utm_term=foresee+in+tagalog
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60ed9b5b262c1d4011345050/1626184539523/butterfly_life_cycle_sentences.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f07a8cfa9d7013435f2a8c/1626372749397/the_amazing_world_of_gumball_the_origins.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e8c157596d362fd0fbb250/1625866583884/tewixun.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60edb811a73a263c31e30956/1626191889725/erased_the_town_without_me.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60efd1e11fe2fc56fbe3c29f/1626329569918/good_morning_2021_images_with_quotes.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e7b4fe5c13cc4fede8cfbe/1625797886208/retrace_ones_steps.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00087548.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x87548 16792 bytes
font_01_sfnt_off00088d5a.bin
c04c5e0477e8eb4a2a1062f67fd85da72208a4248db503f81465ea6a2690ba88		 pdf-font-stream PDF embedded font (sfnt) at offset 0x88D5A 33320 bytes
font_02_sfnt_off0008def3.bin
c2b8af68c17937e6f325a9c8bee211f1ff7f7117cba4d66b967ecf6c12453c22		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8DEF3 10260 bytes
font_03_sfnt_off0008f61b.bin
c5ffcfd9ccb32c929066732682bb712b1802189b4bbd84be3871331d85a6b5b1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F61B 17860 bytes

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