Malicious PDF — malware analysis report

Static analysis result for SHA-256 e11a8159d2d17230…

MALICIOUS

PDF

90.9 KB Created: 2021-07-22 00:42:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: b49cd65605e52bafaefbbcab840111c3 SHA-1: 63a28c70034f113ba9dcdcd68d8400269f7a4f97 SHA-256: e11a8159d2d172307d32969041a0d501ba9e2a11976d682be41058f2b62ac9d2
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is a PDF document flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier. It contains an embedded URI pointing to 'https://pistant.ru/square?utm_term=how+do+u+lose+your+virginity', which is likely a phishing lure. No scripts were extracted, but the presence of an external URI in a malicious PDF suggests an attempt to redirect the user to a compromised or malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9970

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://pistant.ru/square?utm_term=how+do+u+lose+your+virginity
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60f0f1aa06e5cb5c826229de/1626403242702/vopujugiziz.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f07ca0d941835b131ac888/1626373280971/good_exposure_meaning.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f364f6c2d40e67ec0bfb7b/1626563830801/law_of_evidence_is_substantive_law.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f43b870b1749089216b9b2/1626618759542/minevurogevamogutokovixu.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e7fc9a80504e0a776ad63e/1625816218901/65282472635.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ec8242668ba31612b5f2c3/1626112578800/kupogi.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e91d1f1448b06198485919/1625890079456/parallel_and_perpendicular_graphs.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f2df0b1434f635471e0e1e/1626529547651/haircuts_for_long_faces_and_big_foreheads.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e7a98b38ed220952aabfab/1625794955640/79131801446.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f5b07d9fcba71c4acd87d3/1626714237661/juxalejufot.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f28d65de9f7d6ab7b36f06/1626508645518/voguzosifo.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ec9a56704a383bbedb878e/1626118743068/hland_fifa_19_potential.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f891198c7b33121df4f302/1626902810069/voice_acting_classes_for_kids.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f88f293f3fc43c4a1db10a/1626902313240/guideposts_submission_guidelines.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f2de03a047b636121f18e7/1626529284092/xalopiferijaromibimosidor.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f65963e514952827cfe455/1626757476081/tf2_how_to_get_premium.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f29123c2d40e67ec02aad7/1626509603218/english_skills_practice_book_f_answers.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ec831c7726b430b46831ef/1626112796781/22255607468.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f2bd3527519501fc0b0a35/1626520885986/cascading_style_sheets_tutorial.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f70171e54aee7fa976e181/1626800498656/criminal_misconduct_meaning.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f106ef6186c4310041a095/1626408687841/11990209523.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e93d0e92abcc18c4f708db/1625898254368/76562866406.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f316d1c2d40e67ec07bbea/1626543825474/loud_music_report_to_police.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f8941322379e74eb7ad8f2/1626903572076/29018554101.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_off00010065.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x10065 16792 bytes
font_01_sfnt_off0001187c.bin
c1d9651c1259b8b82c5e325626d015a5b60703f26ff35f952180dee9290bfe55
pdf-font-stream PDF embedded font (sfnt) at offset 0x1187C 10616 bytes
font_02_sfnt_off000130ac.bin
5da283c0b250ffcbd63538cd2761c1b459242b5788042fb31b7196d6b7ccd173
pdf-font-stream PDF embedded font (sfnt) at offset 0x130AC 17052 bytes