Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ea23c39e12af4de…

MALICIOUS

PDF

80.6 KB Created: 2021-07-19 23:18:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 80ee04800499d640e9a64f7895dfd90e SHA-1: 7cd2a04a87b1852861e16addd8ab443dd96073df SHA-256: 1ea23c39e12af4defbc9c8aea868087ccbbe9553454d1ae4f8981541667c42cf
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious. It contains embedded URLs that likely lead to malicious content or phishing pages. The ClamAV detection indicates it is a known phishing trojan. No scripts were extracted from this sample, but the presence of embedded URLs suggests an attempt to redirect the user to a malicious site, likely as part of a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

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/IdU8rIDf9lQ/square?utm_term=division+is+not+commutative
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f442de699a8678c583fed0/1626620638704/kexikoxujapibijuzajo.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f126e9008c226a9425688e/1626416873577/english_for_elementary.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec7949ad1bf7105ccad114/1626110281637/from_svg_to_jpg.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60efe0f9874a183f1c3f31ee/1626333433398/kiguzi.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f057f8b0ec6d06f7fbf316/1626363897116/ear_ossicles_anatomy.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e93593b673687559686b6b/1625896340032/what_is_hybrid_fund.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f4d9f950974615f9341ba6/1626659321321/one_day_you_love_me_again_j_balvin.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f1fc8c7c06d275666cbfb8/1626471564558/46019461450.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60eda5b81a2ce466740c9629/1626187192507/eclampsia_meaning_in_tamil.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ed03e4c2ef2d11c8d170e1/1626145764947/mofoluzowebolo.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f361a22be78d52659c544d/1626562978976/prostration_meaning_in_tamil.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f299e3ec5ad00cc0880913/1626511843577/numerical_coefficient_of_x.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_off0000d9aa.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD9AA 16792 bytes
font_01_sfnt_off0000f1c1.bin
e655b18d896e285d1f85d489634bc7f3c9bbcf9d4352654cbcbc5b293d3464bf		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF1C1 10412 bytes
font_02_sfnt_off00010967.bin
f135085113dad007422fec8db3041ae41dfe513f07d6409189d4fab36d41b6f5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10967 16720 bytes

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