Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc4a1cf413f129c2…

MALICIOUS

PDF

91.9 KB Created: 2022-05-29 10:36:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2022-07-15
MD5: 281eb90601b371c9492488c61f1174a0 SHA-1: 380f0c918088ed5fe4980becb148fb137f937221 SHA-256: dc4a1cf413f129c2d8f912bd1e6d0a567190fa5ec8f6e6cc335a9097975cdb79
96 Risk Score

Malware Insights

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

The file is identified as a malicious PDF by ClamAV and an ML classifier. It contains multiple embedded URLs, one of which is https://lovig.co.za/YmrXLWy8?keyword=the%20penelopiad%20play%20pdf%20download%20torrent%20free%20full, suggesting a phishing or malware distribution attempt. The PDF structure itself does not contain readable content, but the presence of external links indicates a lure to external malicious resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://lovig.co.za/YmrXLWy8?keyword=the%20penelopiad%20play%20pdf%20download%20torrent%20free%20full
    • http://xn--66-6kc8bfmkmjd.xn--p1ai/admin/ckfinder/userfiles/files/gojulawefiromejefezadeb.pdf
    • https://poojaindiangrill.com/nbloom/fckuploads/file/zozuxasexuriwefagi.pdf
    • https://e-uchebnici.com/img/file/basiwusekisebog.pdf
    • https://innotek.vn/uploads/news_file/zotenowem.pdf
    • https://betijefozivur.weebly.com/uploads/1/3/0/7/130776077/buvizimozuba-risibo-kazusudukox-dizutaxajer.pdf
    • http://www.yevres.fr/ckfinder/userfiles/files/68028982805.pdf
    • https://horacebatten.com/ckfinder/userfiles/files/56247437350.pdf
    • https://xomiwisaxi.weebly.com/uploads/1/3/3/9/133999446/eab59d.pdf
    • http://sure2trips.com/bot/ckfinder/uf/files/zibiguripibixovet.pdf
    • https://www.irisgroupbd.com/templateEditor/kcfinder/upload/files/denepax.pdf
    • https://tahi.hu/ckfinder/userfiles/files/20737235165.pdf
    • https://jjpremiers.com/files/luxokavapexugiwubezujika.pdf
    • http://dpsnowodworze.pl/userfiles/file/52355941246.pdf
    • https://locoffice.ru/userfiles/file/40494420856.pdf
    • https://nikunjfoundation.org/ckfinder/userfiles/files/76099401240.pdf
    • http://solmoda.it/userfiles/files/nomikitutorawudufufobid.pdf
    • http://metabolit-plus.ru/files/file/lezilopukopalokole.pdf
    • http://dansecyr.ca/pdf/file/vemukivilejemalal.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_off00010437.bin
21b53cb7ca4da3d50d295366a063afb658deb0d6c5deecb25c585c313bb64193
pdf-font-stream PDF embedded font (sfnt) at offset 0x10437 17924 bytes
font_01_sfnt_off000132b0.bin
da2be89f30970f7d47955288ad2070c11c46579bf603674758d0a001b38a4234
pdf-font-stream PDF embedded font (sfnt) at offset 0x132B0 10692 bytes
font_02_sfnt_off00014b2d.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x14B2D 16792 bytes