Malicious PDF — malware analysis report

Static analysis result for SHA-256 e78e1cb962a6ade6…

MALICIOUS

PDF

76.4 KB Created: 2021-07-17 01:05:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 144572b88c2cd86224540506fbe5995a SHA-1: 0eae662932eed00b335bc45e88a810c83a902bcf SHA-256: e78e1cb962a6ade679973b7024e521270d53940d87dad9ea50dda7a9604b2d63
104 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan threat. The presence of a visual download button and an embedded URL suggests an attempt to trick the user into downloading a payload. While the specific family is not identifiable, the overall pattern points to a malicious document designed for initial compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9680

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/S-4CHg4Qmwo/square?utm_term=planner+5d+mod+apk+download+for+android
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e7f1e646a8e17713e5a8a4/1625813478841/harry_potter_and_the_goblet_of_fire_triwizard_tournament.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ec8995fa40056e74d2d96a/1626114453595/rixujibelanepawikigegoba.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f0b9a7840b985f2c51f495/1626388903429/51490901671.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e8437d7facf136447eb294/1625834366111/the_agility_test_would_be_suitable_for_badminton.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60edf32d2e8a4a2aca7c4444/1626207021966/18547325369.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ec98b6831aaf5e928c14e5/1626118326600/92639433983.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ee73dae9cbfe6c2feb3140/1626239962421/vegogivotulojakibiganime.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ec84e48300fd66e1966841/1626113252272/sq_root_of_225.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_off0000c811.bin
38e4876dd52770a7b315c742a34b8d12b409d9d2b9d3b466ec4903cc6b16e872
pdf-font-stream PDF embedded font (sfnt) at offset 0xC811 10704 bytes
font_01_sfnt_off0000e0a7.bin
f143a9eda8d1c44e036a678d3e438afe44603d2b0d2095bd8fa926aa3bc8a2db
pdf-font-stream PDF embedded font (sfnt) at offset 0xE0A7 16608 bytes
font_02_sfnt_off00010bcb.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x10BCB 16792 bytes