Malicious PDF — malware analysis report

Static analysis result for SHA-256 5741494f31eb9163…

MALICIOUS

PDF

77.8 KB Created: 2021-07-14 04:46:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 34425331930850d2711e67d771413212 SHA-1: 552a1db36986f522a1ec2179e895999c1bb4673c SHA-256: 5741494f31eb9163b18686fd599d421708b81a1b02e7a7c7565f99a3fadf8e95
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, indicating a phishing attempt. It contains an embedded URI that likely leads to a malicious site. The document body is heavily obfuscated and unreadable, but the presence of external URIs and the high confidence threat detection suggest a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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/XMoLd4EPXkg/square?utm_term=how+pubg+is+hacked
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60ee320a7c5bce1f334c290e/1626223115080/zusuva.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ed8d5966c2900cf5626280/1626180954074/very_low_fsh_levels.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e90b03defa333328a9a5c1/1625885443767/11_x_17_inches_to_cm.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e8e939b9b95949b65beaf8/1625876793626/red_hook_imperial_ipa.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ee1fba537273346e2d68f9/1626218426773/claim_of_fact_value_policy.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ed89d7bc85f73bac2923f1/1626180055165/mawugo.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ec84327e5cd11affcd4a2a/1626113074520/positive_and_negative_sentences_exercises_with_answers.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e7941adbc52028c83b65df/1625789466551/global_studies_answers.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e960c4787dde1a90aff238/1625907396688/75254940594.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e84fae96589a567cbae81a/1625837486133/wobuna.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ed9995c7772f26c85084f9/1626184085695/sabifagod.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ee40f384a0477e84ab8b2b/1626226931472/ground_state_electron_configuration_copper.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60edf8ab36d5170423630c75/1626208427468/how_to_get_quotation_marks_on_keyboard.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_off0000cfc6.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCFC6 16792 bytes
font_01_sfnt_off0000e7d8.bin
bd3a3f88ca9c2c53ba6f8afedc6cd4822ab162979ef037678d09b64476d879d7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE7D8 16368 bytes
font_02_sfnt_off00011236.bin
163f833b401e123e3c8a304a9f06182bf059f189ad863e179a9f69a1e334347b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11236 10852 bytes

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