Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae9fa1751f15ec2b…

MALICIOUS

PDF

42.2 KB Authoring application: Smallpdf Desktop
MD5: 50a1e794514921b3529236b3acfd8275 SHA-1: 4f00d1331269a4515cb38d4528f994c368dc6a08 SHA-256: ae9fa1751f15ec2bd68de78bd4a1f210f5ab974afd7a921e8524fe0470adee6e
120 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as 'Pdf.Phishing.TtraffRobotInstall-7605656-0', indicating a phishing attempt. The critical heuristic 'PDF_SEO_LINK_FARM' identified a mass of external links, with the primary suspicious URL being http://ximepapiw.videolur.pro/uploads/2020/01/28/217631a3dd5330b.pdf. The document body, though heavily corrupted, also contains this URL, reinforcing the likelihood that the document's purpose is to lure users to malicious sites.

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://ximepapiw.videolur.pro/uploads/2020/01/28/217631a3dd5330b.pdf
    • https://zevujiduro.weebly.com/uploads/1/3/0/5/130588789/nababubekuvi_lukorelafixokul_jesivo.pdf
    • http://bidetarat.filll.icu/uploads/2020/01/27/robifujijomitujam.pdf
    • https://xubokuxetonas.weebly.com/uploads/1/3/0/3/130313272/bebuzoxe.pdf
    • http://loot-ferm.pro/uploads/2020/01/28/08705b25.pdf
    • http://orangestreetgrocer.com/uploads/1/3/0/4/130478110/386d143cf86.pdf
    • http://boxuzog.mixglue.com/uploads/2020/01/27/ranuwopixot_xusowiri.pdf
    • https://penokone.weebly.com/uploads/1/3/0/5/130551564/debefox-surataforasonif-majojik.pdf
    • http://jajutuzu.esther-schreier.net/uploads/2020/01/29/2c713d2.pdf
    • https://watilubumu.weebly.com/uploads/1/3/0/5/130550921/2193894.pdf
    • https://zexupimifosirof.weebly.com/uploads/1/3/0/5/130543476/dac474ae4e3.pdf
    • http://scoreincph.org/uploads/1/3/0/6/130621119/130621119.html#bowflex+xtl+replacement+parts

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000132c.bin
cd3c5b2bff5c26dfabffd4ec3d705efbcf9167a4d7042bf987a53a9e6789b46f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x132C 8524 bytes
font_01_sfnt_off00005e36.bin
6db2f878e0fd57d3a351d0d81a5ccd7b58f68df6728dadc3aee3ebeb1a1d6e60		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E36 16068 bytes

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