Malicious PDF — malware analysis report

Static analysis result for SHA-256 a98c13ae6b1cc0b5…

MALICIOUS

PDF

54.0 KB Authoring application: Poppler-utils
MD5: 4e673e75fb5371658b357429ec2c3a95 SHA-1: 41aec2881c71022755f5f0a8e803ff53dc9e8f06 SHA-256: a98c13ae6b1cc0b50d6da61ba4594e359901eb0c62289d31661fbc4296e39a1b
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. The ClamAV detection as Pdf.Phishing.TtraffRobotInstall-7605656-0 further supports a phishing or malicious redirection intent. The document body, though partially corrupted, also contains several of these URLs, reinforcing the attack pattern. No scripts were extracted from this sample.

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://highshoppingnetwork.com/uploads/1/3/0/5/130545493/bavekonenobone.pdf
    • http://ninktat.com/uploads/1/3/0/2/130272977/kuwitamefixapa.pdf
    • http://vegixu.paradise-hotel.ru/uploads/2020/01/28/lumedebajo.pdf
    • http://vocescuola.org/uploads/1/3/0/3/130313634/riselewimofolu_sudamifobud.pdf
    • http://kcdermodywriter.com/uploads/1/3/0/2/130270837/zexozo.pdf
    • http://designer-parties.com/uploads/1/3/0/3/130323566/875d33721.pdf
    • http://jupajaba.la-mebel-modern.ru/uploads/2020/01/28/xevunavokokozoroj.pdf
    • http://mycountrybowtique.com/uploads/1/3/0/6/130620356/7f911ba.pdf
    • http://connectionsonthebay.com/uploads/1/3/0/6/130639861/538ff7f51b36f2.pdf
    • http://neokundalini.org/uploads/1/3/0/2/130270936/130270936.html#ao3400+mosfet+datasheet

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off00007a91.bin
3d00aff4ba7349601f24196a0e0151e63696d774b8e644a280dae993598980fe		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x7A91 12856 bytes
font_00_sfnt_off00001271.bin
290c0b73773ab0e20b5d3b1f71f87b9a4bf8aa94b67b9b51eadd79c4e588b5f1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1271 9728 bytes
font_01_sfnt_off000059a5.bin
b1696ce18c62e2f68d7f1b8eb7188f3f33e47d1035068f0d0bc1b564e5eb92cd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59A5 3224 bytes
font_02_sfnt_off000063a6.bin
5108bc93df2d1ebd99c0d3b52b529ce6333c6064612c7e591a9891e0062bcf93		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63A6 16564 bytes

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