Malicious PDF — malware analysis report

Static analysis result for SHA-256 bdf59af849c09828…

MALICIOUS

PDF

78.4 KB Created: 2021-07-19 13:35:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 51cf7838be5ab205ffb2f40917756cff SHA-1: c5b2d2a5dfef94cd14a68d44ffdb50bf0c6475b2 SHA-256: bdf59af849c09828257db33b66ff49ff85993ba05bbddef399698a2a6e46eea2
104 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The file was detected as a malicious PDF by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of a visual download button and an embedded URL pointing to a file named 'internet download manager latest version with crack 2019 free download' strongly suggests a phishing or scam lure, aiming to trick users into downloading potentially unwanted or malicious software. No scripts were extracted, limiting the analysis of specific execution behaviors.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6665

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/~3/9xivtwLAy4k/square?utm_term=internet+download+manager+latest+version+with+crack+2019+free+download
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ecaa633080d76c7a54966f/1626122851813/51140574476.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ec8f0b831aaf5e928b18bc/1626115851903/66185671761.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f445b2b84a576e6c0937fd/1626621362842/analog_electronics_questions_and_answers.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_off0000cc44.bin
3c3e35aabe255065ca865194e2e4f0366eafb82259bc8627f795f69ff0b5443c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCC44 17380 bytes
font_01_sfnt_off0000f9af.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF9AF 16792 bytes
font_02_sfnt_off000111c6.bin
42819ab4cc0e87be78c06dfa986d38e3af98c26c5775fa229b988759a4dfd05b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x111C6 11580 bytes

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