Malicious PDF — malware analysis report

Static analysis result for SHA-256 21569c1de189cbb2…

MALICIOUS

PDF

41.4 KB Authoring application: Smallpdf Desktop
MD5: 69b2e1861404d1f5f38878cc1e4c91e8 SHA-1: be87481fdd7060638a8a35376a8a5e912b422db1 SHA-256: 21569c1de189cbb21894612f6438b2de837adc3700bb3d501cdeb302c97fd6e1
120 Risk Score

Malware Insights

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

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 malicious classification. The document body, though partially corrupted, includes some of these URLs, suggesting a phishing or SEO manipulation attempt.

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://bodysoulcomplementarytherapies.com/uploads/1/3/0/6/130605041/jobafab.pdf
    • http://dafataz.instagram-help-secure.com/uploads/2020/01/29/zurela_nobotoxixugi_gogajoxurovutu.pdf
    • http://artsestate.com.au/uploads/1/3/0/4/130483384/duvexemeg.pdf
    • http://kevin938.net/uploads/1/3/0/4/130483343/xikitesegibenob.pdf
    • http://annmajercik.com/uploads/1/3/0/4/130483879/4911056.pdf
    • http://nearspaceengineering.org/uploads/1/3/0/6/130604255/tunere-xedutaxatu-zodojumitoni.pdf
    • http://michaelbthewriter.com/uploads/1/3/0/4/130483748/22f9c238f294fe1.pdf
    • http://ambermayde.shop/uploads/1/3/0/7/130776326/64b76034d2.pdf
    • http://lakewatchoutdoors.com/uploads/1/3/0/7/130738484/xonomejemoxilo.pdf
    • http://thehnossaproject.com/uploads/1/3/0/7/130776309/130776309.html#mammogram+screening+guidelines+family+history

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001280.bin
7b200e94d72203a7e0075e4b57e098a575e3d6cf20ba9ebd41c141b9851b8789
pdf-font-stream PDF embedded font (sfnt) at offset 0x1280 8528 bytes