Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e5754a81b97fd7d…

MALICIOUS

PDF

55.9 KB Authoring application: pdf-parser First seen: 2020-09-07
MD5: aba675a86296cf3856791d1c695ebf82 SHA-1: 232b762abe1026b92058847a6c95b59380c94a51 SHA-256: 3e5754a81b97fd7d54c026d51b32914af97ba60c8d41ae291e9254bd134c22e2
160 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified as a 'PDF_SEO_LINK_FARM' heuristic. These links are likely intended to direct users to malicious content or phishing sites. The ClamAV detection further supports the malicious nature of the file, classifying it as 'Pdf.Phishing.TtraffRobotInstall-7605656-0'. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://lahomedeco.tw/uploads/1/3/0/5/130539659/3722262.pdf In PDF document text
    • http://becomeacontractor.com/uploads/1/3/0/4/130476035/8dacee0c6f0b389.pdfIn PDF document text
    • http://brianpatrickwilliams.com/uploads/1/3/0/7/130740393/vuxopefer_wajuseg_faxarelasavagu_xasazepawasiwit.pdfIn PDF document text
    • http://consulting123.de/uploads/1/3/0/2/130289722/filapanaradofulakaxo.pdfIn PDF document text
    • http://glammeshops.com/uploads/1/3/0/4/130489172/500304.pdfIn PDF document text
    • http://cecilyeiferle.com/uploads/1/3/0/6/130639911/130639911.html#left+handed+calligraphy+practice+sheets+freeIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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_off000012dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12DC 9044 bytes
SHA-256: f9e5a81131050d92068ee54b0b1beb92ab480a1869b8729087abab2242d2686b
font_01_sfnt_off00008ba1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BA1 1708 bytes
SHA-256: 83459e82cebe561b9e65dda6a09953c9e35f75e5df0fa62a624e1833cc5b8086
font_02_sfnt_off000093a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93A5 16524 bytes
SHA-256: 9bad02752a333ceb183d9a00b3812533db330c07a2182a3d5c993e2f8e3237cb

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