Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb569243cdbfc617…

MALICIOUS

PDF

49.3 KB Authoring application: LibreOffice
MD5: 3dea6c14a35f140c1416ec0aabcf4191 SHA-1: 60fe212c5ceb0dc242788896df5c5365bf377ebe SHA-256: fb569243cdbfc617b81873236baa713a0c4ca5af3c9750989584659b57868704
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links to other PDF files, a technique commonly used in SEO poisoning and phishing campaigns. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a phishing intent. The document body, though heavily obfuscated, mentions 'ACCA Examiner' and 'practice test', suggesting a lure to trick users into downloading malicious content disguised as study material.

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://koolcompanies.com/uploads/1/3/0/3/130379415/duzaxafinezixepal.pdf
    • http://palomarpools.com/uploads/1/3/0/6/130604516/wuvapex.pdf
    • http://luxoperon.com/uploads/1/3/0/6/130620843/sizika_siganapib.pdf
    • http://alaskasummerinstitute2020.com/uploads/1/3/0/7/130738506/fupusobodadepezufevo.pdf
    • http://nathanbarot.com/uploads/1/3/0/6/130620811/kasafijokemuvevo.pdf
    • http://howmuchtrip.com/uploads/1/3/0/5/130588575/71613169.pdf
    • http://mynarrativeofmusic.com/uploads/1/3/0/5/130550944/fikukefotomug_zavolaloxaf_wofugopavexux_nirufopakotopu.pdf
    • http://nubeginningfarm.com/uploads/1/3/0/7/130738546/2308427.pdf
    • http://notaryofnh.com/uploads/1/3/0/3/130379504/relufo.pdf
    • http://5thwoman.com/uploads/1/3/0/8/130874586/8aece2.pdf
    • http://njprint-wear.com/uploads/1/3/0/4/130483819/bapogir_kovowoxemonaw_nosoputopam.pdf
    • http://saloteflorist.com/uploads/1/3/0/4/130489123/4043580.pdf
    • http://stealthlaptops.com/uploads/1/3/0/2/130272902/raxapekeka_zuzenazaga_videxe.pdf
    • http://reefnine.com/uploads/1/3/0/6/130639042/wifebifere.pdf
    • http://1600charlestonregionalparkway.com/uploads/1/3/0/7/130740062/pigitak-zixofilasinav.pdf
    • http://jennyslist.net/uploads/1/3/0/5/130544086/7277869.pdf
    • http://wcd-qe6b02fu.mgh-r.ch/uploads/1/3/0/4/130478307/130478307.html#acca+f9+practice+test
    • http://luxoperon.com/uploads/1/3/0/6/130620843/sizika_siga

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004c00.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4C00 16036 bytes
font_01_sfnt_off0000635c.bin
091a12868ea3ade81c3e16d9b484bb8e09699a40b6a8045227e2b3e8b632b251		 pdf-font-stream PDF embedded font (sfnt) at offset 0x635C 8648 bytes

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