Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd4b8cb78ed03a6c…

MALICIOUS

PDF

86.7 KB Created: 2021-07-12 21:31:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 7347695c1e82d0a3d79722983759d927 SHA-1: 4c39735fe6704c80ea2d326c451db4efab843660 SHA-256: dd4b8cb78ed03a6cc781b8b1fa7771261d26b4ffdc9c4aafef34137f275542c2
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics and an ML classifier as malicious, with ClamAV identifying it as a phishing trojan. The embedded URLs, though some are marked benign, suggest an attempt to redirect the user to malicious content. No scripts were extracted, but the PDF structure itself likely contains malicious links or exploits.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8239

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://feedproxy.google.com/~r/sq/ugae/~3/gOBB6uaVNRA/square?utm_term=terlingua+ghost+town
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ec88f2bdd82073f6ffb434/1626114290356/when_do_you_want_to_see_me_in_spanish.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e92cb72f3c4128e18ab8f2/1625894071850/67521573821.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e9436b2dabf27235557d48/1625899883076/mamegomukulomefuxi.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ec8316ff9c8b53cea25a49/1626112790891/watch_seed_of_chucky_free_online.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e841923e39e916afed2fbc/1625833874674/zudatubexumirakekizuk.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e89383a939df2b14d8f02b/1625854851658/dizalejuran.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_off0000f1e7.bin
cc683a6de63bae6a80e2a6bd6f21c91b62a67e6fe4c50d9516aa31b44950a9b1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF1E7 10536 bytes
font_01_sfnt_off000109eb.bin
6539129dddfd974b8d99b9ba9eecf3f3fcc08365c9a50c1aa162027a97d952f2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x109EB 17320 bytes
font_02_sfnt_off00013738.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13738 16792 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.