Malicious PDF — malware analysis report

Static analysis result for SHA-256 76d82bdc467c70d9…

MALICIOUS

PDF

45.2 KB Authoring application: Nitro PDF
MD5: eed14d2b9b014c277492b132d0bf4c20 SHA-1: 1341144e9af3581599fd5563d4d6367faed7e788 SHA-256: 76d82bdc467c70d9dc220729445e5acfb0950909569d9ed4af8b2ec285408eec
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a large number of embedded external links, as indicated by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, suggesting a coordinated effort to distribute content or manipulate search engine results. The ML classifier and ClamAV detection further confirm the malicious nature of the file. No scripts were extracted, but the sheer volume of outbound links is highly suspicious.

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://somorunning.com/uploads/1/3/0/6/130604363/e344ef901eb3e2.pdf
    • http://simixagplus.com/uploads/1/3/0/4/130476496/6410172.pdf
    • http://getreadyforlifeskills.com/uploads/1/3/0/8/130873895/7407860.pdf
    • http://drrosechildcentredcounselling.com/uploads/1/3/0/5/130550832/belimar.pdf
    • http://newkids.co.uk/uploads/1/3/0/3/130379246/lawixekiwufagol-gokovu-jivipirewidagu-vubuxep.pdf
    • http://bohemianbirth.ca/uploads/1/3/0/6/130639901/susipunonuj_gonerobojivefo_vulajax_gasosuvu.pdf
    • http://weeknightworkout.com/uploads/1/3/0/4/130491166/dasolupafebala-gojadasizoves-jeludopeviwozof-wopelo.pdf
    • http://kleinforensicpsychiatry.com/uploads/1/3/0/2/130289333/9694767.pdf
    • http://aikhme.com/uploads/1/3/0/4/130483515/309521.pdf
    • http://ranchopescadero.net/uploads/1/3/0/6/130620283/9476339.pdf
    • http://cat.satcomarca.com/uploads/1/3/0/2/130274282/dafibovobamido-vojavosiguji.pdf
    • http://suicidepreventionproject.com/uploads/1/3/0/4/130476347/2d985b33f30.pdf
    • http://stgo2020.net/uploads/1/3/0/2/130270796/8509562.pdf
    • http://advocateproject.org/uploads/1/3/0/8/130814845/pivozitimap_baginukemexipaw_xuximaronebib_lolesamezuxosa.pdf
    • http://therapydoglovers.org/uploads/1/3/0/7/130739280/4057962.pdf
    • http://xlntcoffee.com/uploads/1/3/0/2/130271087/7981137.pdf
    • http://illumonopoly.com/uploads/1/3/0/6/130604803/431d6b89f691a8.pdf
    • http://newanday.host/uploads/1/3/0/6/130621324/zotutop_xoxovinus.pdf
    • http://auntyneighbor.com/uploads/1/3/0/8/130814129/mirunaxu.pdf
    • http://windsorwes.com/uploads/1/3/0/4/130435581/bodoj_siwofiroto.pdf
    • http://christinecarson.net/uploads/1/3/0/6/130621158/gebume.pdf
    • http://kkompani.com/uploads/1/3/0/3/130312980/6f4a3.pdf
    • http://okiegear.net/uploads/1/3/0/6/130604192/ravelexuweruru.pdf
    • http://musicatkhs.com/uploads/1/3/0/5/130550749/vasuzufiwipar.pdf
    • http://shardexplorers.com/uploads/1/3/0/5/130590047/130590047.html#pregnant+belly+placenta

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004bdc.bin
b366d43e3e460bddd838a417af8332d91af7ba3fdcc47f831a23c090fda6c33d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4BDC 8592 bytes

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