Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d590b3e11b26fdb…

MALICIOUS

PDF

44.7 KB Authoring application: OpenOffice Draw
MD5: a9b132bd848d8e1918fe8e49a8eb03c8 SHA-1: 0cf8a5c7ab92c2e72d22ac9c804f56a02bf96081 SHA-256: 7d590b3e11b26fdbb9b7a9f33cc02081396b2d58aecc512136fe71c5de4b9b6c
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded URLs pointing to other PDF files, a technique often used for SEO spam or to distribute malicious content. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the 'PDF_SEO_LINK_FARM' heuristic strongly indicate this malicious intent. The ML classifier also flagged this file with high confidence. No scripts were extracted, and the document body was truncated and unreadable, but the URL structure is sufficient for this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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 http://migearup.org/uploads/1/3/0/6/130604806/kedus.pdf
    • http://peekums.com/uploads/1/3/0/7/130739006/557746.pdf
    • http://host240.powermaxusa.com/uploads/1/3/0/7/130775998/4590810.pdf
    • http://www.floridaediblelandscaping.com/uploads/1/3/0/5/130539113/raxibiwe_lizon_sizawulitoneto_kugalo.pdf
    • http://midwestairsoftgroup.net/uploads/1/3/0/6/130639668/rolaxufexo.pdf
    • http://mindfulneuropsych.org/uploads/1/3/0/4/130490687/3726b60ed9ab3f.pdf
    • http://moneytree101.org/uploads/1/3/0/5/130551218/zogiduva-puzofakizun-getuwevawopire.pdf
    • http://autodiscover.mackenziefreed.com/uploads/1/3/0/5/130547924/4354f1e3538e.pdf
    • http://misspeggysdogwalking.com/uploads/1/3/0/5/130539095/xuxulisubipatezav.pdf
    • http://catapult42.com/uploads/1/3/0/8/130873741/7093618.pdf
    • http://thetruroflorist.com/uploads/1/3/0/5/130540437/potex_devitizojuxuvuk_fiviwipi.pdf
    • http://ashishyadav.com/uploads/1/3/0/6/130639953/4506329.pdf
    • http://twistedfoil.com/uploads/1/3/0/5/130539987/1317161.pdf
    • http://marfar.org/uploads/1/3/0/6/130620823/6048520.pdf
    • http://www.gkm.services/uploads/1/3/0/2/130289428/6033466.pdf
    • http://balloonsoverbranson.com/uploads/1/3/0/8/130874126/sukubugise.pdf
    • http://admin.wintersilversmiths.com/uploads/1/3/0/9/130969939/ac9a6ef9134.pdf
    • http://faithintegration.com/uploads/1/3/0/5/130589214/nugadetegag.pdf
    • http://www.soledadrizzofotografa.com/uploads/1/3/0/3/130313603/00c3a0c801412.pdf
    • http://relst-uhag66.com/uploads/1/3/0/4/130476747/6252354.pdf
    • http://ns1.zjchrome.net/uploads/1/3/0/3/130313309/bajurokarovik.pdf
    • http://vera-b.pleasingfood.com/uploads/1/3/0/4/130476850/130476850.html#yield+strength+of+square+steel+tubing

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004b64.bin
eb691cfc9ce83be91d0e71e20e160f3770088f41d5718072e1d46b5047727bb5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4B64 9048 bytes

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