Malicious PDF — malware analysis report

Static analysis result for SHA-256 631cac1c35f13b2c…

MALICIOUS

PDF

41.1 KB Authoring application: Inkscape
MD5: c32d099aeba46efc3d72cde8da5e541e SHA-1: e14f4689e79b1dc35e27eb76868c7eb177c43af2 SHA-256: 631cac1c35f13b2c2352e581c0ec7b65f4e4798787851c4fcd3b57ee01d12c31
152 Risk Score

Malware Insights

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

The PDF 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 strongly support the malicious nature of this file, classifying it as phishing-related.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://alvarezorganicfarm.com/uploads/1/3/0/3/130379627/vizek_roxizapuwivirip.pdf
    • http://fcfcp.com/uploads/1/3/0/4/130489527/4089159.pdf
    • http://sandysignaturehomes.net/uploads/1/3/0/7/130775974/311f17.pdf
    • http://shopp-italia.fun/uploads/1/3/0/4/130488412/bb063dc6e1c30e.pdf
    • http://74-123-75-138.mgwnet.com/uploads/1/3/0/6/130639976/tesolodoj_fadulodupex_tevozefaxipe_wixafogifezoxov.pdf
    • http://affordablewarbird.com/uploads/1/3/0/6/130639446/tijetabidoxoxa_wigarakawegoted_xaxufejipu.pdf
    • http://specialhairstyle.com/uploads/1/3/0/7/130776185/nezenuxoko_pizenu_beruwasenazones.pdf
    • http://jobcentreguide.net/uploads/1/3/0/2/130272928/tifupewoto-vujodusepomufe-papupudumurome.pdf
    • http://mercigifts.ca/uploads/1/3/0/5/130539714/5610993.pdf
    • http://www.harveyrei.com/uploads/1/3/0/4/130436196/nanabi.pdf
    • http://acecon.net/uploads/1/3/0/7/130739593/sotekimare-doxukukuvutow-begapulegomeba.pdf
    • http://centerforpilates.com/uploads/1/3/0/6/130620251/dagewar_miwaj_gexane_semide.pdf
    • http://nuts4less.net/uploads/1/3/0/2/130273626/netaza_nosutolibex_xudarugalen.pdf
    • http://8uxk6.slpny.com/uploads/1/3/0/5/130589264/130589264.html#abdominal+bloating+in+heart+failure
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003096.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3096 16036 bytes
font_01_sfnt_off000047a5.bin
751894f0258bf68ef5b2adc9245c1ca19ff0f7ab9345e635d6a298c60c4d4aef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x47A5 7876 bytes

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