Malicious PDF — malware analysis report

Static analysis result for SHA-256 d616746bd25164da…

MALICIOUS

PDF

81.4 KB Created: 2021-07-13 00:52:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 56f76f20a8eb1b5490df2dbb3ceb2479 SHA-1: 7e4884cad2d8f0eb97b029f6cce02101b65dc2a5 SHA-256: d616746bd25164da00e2d777fb4a3e314996ebd26a9b0016a6290a39f02eb9cb
104 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that appears to be a download lure, indicated by the 'utm_term' parameter suggesting a search query for a game download. The PDF_URI heuristic also points to this external URL, which is the primary indicator of the attack's intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

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://queure.ru/square?utm_term=inazuma+eleven+go+strikers+2013+download+dolphin+android
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e882151abe297433e0f046/1625850389419/stay_meaning_in_kannada.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e842b802850865eb89c784/1625834168875/jee_main_march_registration.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e93afac91b61347ea47c09/1625897722894/83838787203.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ecb5adee09f056ba436855/1626125742081/2.5_liter_to_cups.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ecb59fb5b6766af3e22303/1626125727983/62899883732.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e939742a6f785f5835271c/1625897332807/70653519938.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ecb923ad57c82336585dab/1626126627365/gatsby_and_contentful.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ecb600219f3d29f2f9f8fe/1626125824567/free_pop_slots_coins_2019.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e906cf83ae0c490237fc8c/1625884367140/pazimojapurasogebexi.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ecb1bff9fdfb3a2d2f6a06/1626124735933/partial_syndactyly_toes.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e86f3c0c9c5f4f141c3542/1625845564797/24093553760.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e78c0ddbb92d34f5a9fbd4/1625787405823/shoved_off_meaning.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_off0000dafd.bin
3f1cf967d5a52a797f8816115aafd17a43a8d7b023746304a78c30e134817c75		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDAFD 11660 bytes
font_01_sfnt_off0000f684.bin
cb218bb37604760fb5e17c3cfc8ba9ffeeb0c74e31f7564fec53e21b57763d9c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF684 16212 bytes
font_02_sfnt_off00012090.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12090 16792 bytes

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