Malicious PDF — malware analysis report

Static analysis result for SHA-256 bab41822b639d488…

MALICIOUS

PDF

43.0 KB Authoring application: Adobe PDF Library 9.0
MD5: 0832bddabb7b51b43ef2335bd30a4770 SHA-1: 31cc84c28df0188dbca152a77acfc546b7abeba0 SHA-256: bab41822b639d488659aa60a6c9c73c666ec2b9b0016f9081fd5dceb6939c5d4
150 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical PDF_SEO_LINK_FARM rule and ClamAV detection as Pdf.Phishing.TtraffRobotInstall-7605656-0. The document contains a large number of embedded URLs pointing to other PDF files, suggesting a link farm or redirection mechanism. The ML classifier also strongly indicated maliciousness.

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://bethwayseer.com/uploads/1/3/0/8/130874340/vozoxagavadusenala.pdf
    • http://insightosteopathic.net/uploads/1/3/0/6/130639998/c84fbe98d59.pdf
    • http://duckponics.net/uploads/1/3/0/6/130621072/potuzane_xusavegovokozi_xuwakigazi_nabiledapozuxun.pdf
    • http://www.hiawathaparkfriends.org/uploads/1/3/0/6/130620930/2445416.pdf
    • http://rootedinmma.com/uploads/1/3/0/8/130874617/5d560db1b1d.pdf
    • http://mynaturalplace.org/uploads/1/3/0/6/130639641/60c81d.pdf
    • http://alessandrocorezzola.org/uploads/1/3/0/5/130588721/lupanefobob.pdf
    • http://2wheelassault.com/uploads/1/3/0/7/130775267/7700533.pdf
    • http://nangginkui.com/uploads/1/3/0/6/130640105/jomaliwugapifapumusu.pdf
    • http://www.wmfws.com/uploads/1/3/0/8/130873930/manoxalizulip_remik.pdf
    • http://www.gracefulaccents.com/uploads/1/3/0/7/130776754/2224034.pdf
    • http://basicist.com/uploads/1/3/0/6/130639426/losejeg-gatevinulo-bojexomawi.pdf
    • http://arjandoevendans.nl/uploads/1/3/0/7/130739347/55bb80b.pdf
    • http://cobblestoneconfectionsbakery.net/uploads/1/3/0/7/130776687/rowovew-tolas.pdf
    • http://www.thewisewomanprogram.co.uk/uploads/1/3/0/4/130488812/tutakawixisi.pdf
    • http://hoonc.org/uploads/1/3/0/2/130272636/f8468edb2532b4.pdf
    • http://ekcoelearningcommons.com/uploads/1/3/0/6/130620529/mobuti.pdf
    • http://haiyi-americaniahotel.devsite-1.com/uploads/1/3/0/7/130774977/130774977.html#resignation+letter+sample+teaching+assistant
    • http://ekcoelearningcommons.com/uploads/1/3/0/6

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003357.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3357 16036 bytes
font_01_sfnt_off00004a67.bin
7b4f6a23a793d4e124cfb2675b76c4aa63de9e306963dfc86729039248f079ea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4A67 8176 bytes

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