Malicious PDF — malware analysis report

Static analysis result for SHA-256 a077a90a6b1e5006…

MALICIOUS

PDF

59.4 KB Authoring application: OpenOffice.org
MD5: eb3a0c5c67700d1a995b8c271f4d2699 SHA-1: 2c6e3ea821844c496dba38191a605807a88adff5 SHA-256: a077a90a6b1e500638fc8e8d4bcc24fd5b90830396a1687ad0105215a0c77904
152 Risk Score

Malware Insights

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

The PDF file was identified as malicious by ClamAV and an ML classifier, with a critical heuristic firing for a PDF SEO link farm. The document body contains numerous external URLs pointing to PDF files, suggesting a phishing or redirection campaign. The primary attack pattern involves luring users to click on these links, which likely lead to further malicious content or exploits.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://mintofarm.ca/uploads/1/3/0/3/130323116/7d55aa020c8a.pdf
    • http://nezi.volkanarslan.net/uploads/2020/01/28/6418835.pdf
    • http://jomuk.blendsa.com/uploads/2020/01/29/a6845.pdf
    • http://aialumassage.com/uploads/1/3/0/6/130620613/9022505.pdf
    • http://fynnad.store/uploads/1/3/0/5/130539165/bazerewanunati_kotigusobumifaf.pdf
    • http://attorneys-lawfirmsuseretiredattorneys.com/uploads/1/3/0/5/130538842/4966325.pdf
    • http://waarmte.nl/uploads/1/3/0/3/130324418/1603484.pdf
    • http://originalpancakehousesavannah.com/uploads/1/3/0/5/130551343/pakudifibesizul-rojisetipa.pdf
    • http://share-genki.com/uploads/1/3/0/7/130775256/2bdfb511.pdf
    • http://ste420.com/uploads/1/3/0/5/130589452/ligefepoladurikavi.pdf
    • http://mal-test.com/uploads/1/3/0/4/130483305/gigudog_rujijo.pdf
    • http://101travelphotos.com/uploads/1/3/0/6/130605302/318617f6dc5.pdf
    • http://thehappygirlstore.com/uploads/1/3/0/7/130740389/130740389.html#does+plaque+form+on+dentures

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000013d6.bin
f142fc214616805b280c32f7e91fc8bfa0cc1cc544ca6a3499cd599e58c64a3c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13D6 9096 bytes

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