Malicious PDF — malware analysis report

Static analysis result for SHA-256 66db3e6c9b91acbf…

MALICIOUS

PDF

40.2 KB Authoring application: LibreOffice Draw
MD5: 3e04122adc6b16f253e5551288babff4 SHA-1: e2fd85f8c4327b1b87a8269b545f7543e83fcf00 SHA-256: 66db3e6c9b91acbf2e7b0e811ace85072699edc545d66ef867f3af9b9c4f943d
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, as malicious. It contains a large number of embedded URLs pointing to external PDF files, suggesting a link farm or phishing campaign. The document body contains garbled text and references to Java, which is likely obfuscation or unrelated content.

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://sukikoxeri.sloto-cash.ru/uploads/2020/01/28/sogavemunomexemu.pdf
    • http://rodeg.katalog-z.com/uploads/2020/01/28/0f8c1c11fca.pdf
    • http://owenwilson.ru/uploads/2020/01/27/5095547.pdf
    • http://ciardhamedia.com/uploads/1/3/0/3/130379398/4196698.pdf
    • http://zambiasafarihunting.com/uploads/1/3/0/6/130639622/megozepeguj_sidexezojelexi.pdf
    • http://kvartlet.info/uploads/2020/01/29/tusakika-budiborowuwe-tisebetuzivek.pdf
    • http://wiki-compac.info/uploads/2020/01/28/pezukokarovev.pdf
    • http://winshipwellness.com/uploads/1/3/0/5/130590273/gagow.pdf
    • http://alwaysgq.net/uploads/1/3/0/3/130379179/mowariruwarox.pdf
    • http://orangecountyflamenco.com/uploads/1/3/0/3/130323914/3259838.pdf
    • https://bikuwejavivagul.weebly.com/uploads/1/3/0/4/130488750/reler.pdf
    • http://equuleusservices.com/uploads/1/3/0/4/130490117/jowotezoja.pdf
    • http://febukak.audiostart09.icu/uploads/2020/01/28/74424f42.pdf
    • https://majabuxomisivi.weebly.com/uploads/1/3/0/6/130605442/8018921.pdf
    • http://krrkingsriverranch.com/uploads/1/3/0/6/130603741/57f3a2f0b.pdf
    • https://giganibuz.weebly.com/uploads/1/3/0/6/130605176/6444722.pdf
    • http://weddingproct.com/uploads/1/3/0/6/130620464/libifakuw.pdf
    • http://rokod.fotografs.ru/uploads/2020/01/28/lukafaxeg_zaziferovanunud_liwez_rovokok.pdf
    • https://gedamiruwa.weebly.com/uploads/1/3/0/2/130274304/jepetinidebegep.pdf
    • http://metropolismexican-grill.com/uploads/1/3/0/4/130489437/lonimaj.pdf
    • http://mountainfestival.org/uploads/1/3/0/4/130435751/telub.pdf
    • http://intentionalfitness.club/uploads/1/3/0/3/130313728/cd698894f.pdf
    • https://wabapupimulo.weebly.com/uploads/1/3/0/5/130539247/7570752.pdf
    • http://branduconsulting.com/uploads/1/3/0/2/130291908/130291908.html#java+jdk+10.+0.+1

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001680.bin
4208576bf474c41f7fa644b81399a0de4c8ef7e2054937cc6fd1fbe87be5bb07		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1680 8168 bytes

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