Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff1fa354c21117a3…

MALICIOUS

PDF

39.5 KB Authoring application: LibreOffice Draw First seen: 2020-09-24
MD5: 712089ee8b01e548d9ffc957d8779d38 SHA-1: 3fcc5dd0f6d5040390b1a12edeaa60cdca37639b SHA-256: ff1fa354c21117a35c873892d59a2f901186954f67d9540ec723d889d0166c33
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links pointing to external PDF files hosted on various domains. This technique, identified by the PDF_SEO_LINK_FARM heuristic, is commonly used to distribute phishing content or malware. The ClamAV detection as Pdf.Phishing.TtraffRobotInstall-7605656-0 further supports a phishing or malicious redirection intent. No scripts were extracted, and the document body content appears to be corrupted or irrelevant to the malicious activity.

Heuristics 3

  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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.
  • 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://playhardathletics.com/uploads/1/3/0/2/130270768/6373281.pdf In PDF document text
    • http://3lmboutique.com/uploads/1/3/0/5/130588679/jotexapozuru.pdfIn PDF document text
    • http://naka.socfund.org/uploads/2020/01/28/817067e28.pdfIn PDF document text
    • http://bcummings4.com/uploads/1/3/0/5/130547552/zopugibasota.pdfIn PDF document text
    • http://meridianintranet.com/uploads/1/3/0/4/130488198/f2a34823f.pdfIn PDF document text
    • http://vagobumuta.sultantec.com/uploads/2020/01/29/bebid-wejas.pdfIn PDF document text
    • http://lifebyarchitecture.net/uploads/1/3/0/6/130604871/nazolujiko.pdfIn PDF document text
    • http://karobavemo.tricolor-koroyove.ru/uploads/2020/01/28/9215cbbc6357.pdfIn PDF document text
    • http://neokundalini.org/uploads/1/3/0/7/130739218/130739218.html#subclinical+hypothyroidism+in+early+pregnancyIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000011d1.bin
ba9dad7d4e0475ca25ebfa35572aeb4d74a97c33204e1a0ed2da60d4dcd6f836		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11D1 8744 bytes
font_01_sfnt_off000053d6.bin
b3affdfdfee497c2d3230853582529cf395d265bfdbb8cde7d84ae9c33602211		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53D6 16036 bytes

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