Malicious PDF — malware analysis report

Static analysis result for SHA-256 891ae41ae8818dcc…

MALICIOUS

PDF

51.5 KB Authoring application: Serif PagePlus First seen: 2020-09-07
MD5: 7f2847b816e993a93e6714647a871796 SHA-1: 962ac961f34af71765c589b0a4fe5b8f9ac61ab8 SHA-256: 891ae41ae8818dccc6399a1c39694f979dc9c4d932fda3a0cfb79cf608086f74
160 Risk Score

Malware Insights

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

The PDF contains a mass external link farm with numerous links to other PDFs, indicating a phishing or malware distribution attempt. The presence of a 'download button' heuristic further supports this, suggesting a lure to trick users into downloading malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://europeanwaxing.us/uploads/1/3/0/5/130541443/boxaruk_rabikel_katukil_sumiguro.pdf In PDF document text
    • http://brewandplowfarm.com/uploads/1/3/0/3/130323932/9152319.pdfIn PDF document text
    • http://minoritypodcast.com/uploads/1/3/0/3/130323206/fee6d17a42c9.pdfIn PDF document text
    • http://qnek.net/uploads/1/3/0/2/130273896/monemavutuf.pdfIn PDF document text
    • http://sacred-journeys.net/uploads/1/3/0/3/130379179/sewemolobiwa_sugapanemode.pdfIn PDF document text
    • http://midicicr.com/uploads/1/3/0/6/130605263/9956502.pdfIn PDF document text
    • http://ccpstl.org/uploads/1/3/0/5/130588492/xefowefogufa.pdfIn PDF document text
    • http://allamericandogexpo.com/uploads/1/3/0/3/130313035/130313035.html#olx+app++new+versionIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
🗂 Part of campaign: qnek.net 5 samples

Related samples 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001351.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1351 9684 bytes
SHA-256: 641990442a141ada2cefffb8738c097b98589b18cd150ead3d5d438c3e9258f8
font_01_sfnt_off0000767e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x767E 1872 bytes
SHA-256: 1313c42514c5e2c39ac4962aa9a5e54dbb84ed9285b79088695fcf755539dff9
font_02_sfnt_off00007f2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F2E 17284 bytes
SHA-256: 30fd798a16b2cd48814e4a5f4eed8fd6507d0152d79cbf95d2393567815bfde6

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