Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa1922fc28d80a35…

MALICIOUS

PDF

75.9 KB Created: 2021-04-02 16:54:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2f8c0a38a1c7458018e03cfa28417ee1 SHA-1: 28b0174e6d2da9b919e3619d66ec70df0cbfbd43 SHA-256: fa1922fc28d80a35db832c648e97b7864c76682fcb097057b04c2f9467c3a9db
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. The document body, though heavily obfuscated, suggests a technical context, possibly a lure for a phishing attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://golowaki.ru/123?utm_term=catransform3d+to+cgaffinetransform
    • http://fomigiv.mypressonline.com/30207260293.pdf
    • http://konexubevudo.iblogger.org/tozimejefulenixuwezomox.pdf
    • http://wipababotuzuke.iblogger.org/dadasoxirubutudit.pdf
    • https://static.s123-cdn-static.com/uploads/4495696/normal_5fec74164f21a.pdf
    • https://cdn-cms.f-static.net/uploads/4390385/normal_60654f52d4860.pdf
    • http://trujillostacoshop.com/cookie_clicker_pantheonmxc2i.pdf
    • http://xogavuw.medianewsonline.com/wedupi.pdf
    • http://big-ita.space/5529075183rxif0.pdf
    • https://cdn-cms.f-static.net/uploads/4482860/normal_605531c9cdd3c.pdf
    • https://cdn-cms.f-static.net/uploads/4478952/normal_60567dfd408de.pdf
    • https://cdn-cms.f-static.net/uploads/4393790/normal_601b287043561.pdf
    • https://static.s123-cdn-static.com/uploads/4368949/normal_5fc980e4e8c7e.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://puwolivorofe.rf.gd/lonely_planet_berlin_espaol.pdf
    • http://lepevalir.rf.gd/59969846320.pdf
    • https://s3.amazonaws.com/lososimap/56740050281.pdf
    • https://s3.amazonaws.com/fodose/74729646165.pdf
    • https://s3.amazonaws.com/bejikefowu/64029849087.pdf
    • http://darafefe.rf.gd/sogizafaraveruxon.pdf
    • https://s3.amazonaws.com/satedafadusizo/fuzapib.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://scripts.sil.org/OFL
    • 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_off0000d3d6.bin
bf258612acefb8dd8c1dd651583af6ad7180f0f84b855dd4769b18a400ba08d1
pdf-font-stream PDF embedded font (sfnt) at offset 0xD3D6 5380 bytes
font_01_sfnt_off0000e602.bin
f18c046e2e76b25c89e15f1fe582ef1de804ffcb9649c9542e275ab1f2735c57
pdf-font-stream PDF embedded font (sfnt) at offset 0xE602 11188 bytes
font_02_sfnt_off00010c5f.bin
8fe31ac2096c5e11ca20e474ac9d4b0e624cd7c6a3d6648e58269b78a2b36287
pdf-font-stream PDF embedded font (sfnt) at offset 0x10C5F 16304 bytes