Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5acaa00e6b0ce6a…

MALICIOUS

PDF

118.2 KB Created: 2020-12-30 16:11:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: d6cf40da1db378e419b42e64a1ac0a8b SHA-1: 9c83da9f7358fa6ca692b6fd98e519afc11a971d SHA-256: e5acaa00e6b0ce6afdb5e41d758702877fe978462f76c6da30fe507b1da9f929
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan payload. It contains an embedded URL that leads to a suspicious domain, likely intended to host a malicious payload or phishing page. No scripts were extracted, but the presence of an external URI suggests an attempt to redirect the user to a harmful resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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://trafffe.ru/strik?utm_term=charades+meaning+in+english PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4488322/normal_5fec4db9d58cf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373778/normal_5f8af349d34e6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368782/normal_5fcbdf2423134.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366947/normal_5feb7a5715cf5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://s3.amazonaws.com/kotodur/32401118963.pdfIn PDF document text
    • https://s3.amazonaws.com/jitimesolagun/nitovo.pdfIn PDF document text
    • https://s3.amazonaws.com/sojuravewi/60435731187.pdfIn PDF document text
    • https://s3.amazonaws.com/tedowafomaru/37281363100.pdfIn PDF document text
    • https://s3.amazonaws.com/xenavuxa/32633362587.pdfIn PDF document text
    • https://s3.amazonaws.com/vavabi/ralesazebiluga.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_007_off0001924d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1924D 24580 bytes
SHA-256: 17ce0a1a3ee915a821cb9925085737da082c5e54e25b3096bda2dca6ba49e1e7
font_00_sfnt_off0000f712.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF712 16296 bytes
SHA-256: 50342297a1f450a719b64d7ed85afb010e277271c4e2e7e1a6e1c88ec5efd988
font_01_sfnt_off00012c29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12C29 5144 bytes
SHA-256: 1fe1b4a2b8c9d3160298dd97f2c32c531d2bfac40607f7f8a594a4c25f2fedfd
font_02_sfnt_off00013d65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13D65 8588 bytes
SHA-256: 19af7f39e58659682d97c228725074e9b36a6357c5ae4352077f4990c9cc4810
font_03_sfnt_off00015530.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15530 21268 bytes
SHA-256: cf27e648bb67deed58b9affe7d2b62bfd1f9a553771230daad7638ea130fa992
font_05_sfnt_off0001bc06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1BC06 3264 bytes
SHA-256: 58b8839354466b3fa616654eeea55e9026a1fc8e019c5b2f078860fc8f47237a

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