Malicious PDF — malware analysis report

Static analysis result for SHA-256 3accfafc3d8a1456…

MALICIOUS

PDF

36.3 KB Authoring application: Scribus
MD5: 1dd52a7e97d491d14f4a96c4ae912c34 SHA-1: 31855f0bdb7e9b495ce9d12f55ea5bc9226a1d02 SHA-256: 3accfafc3d8a145633c70c07d04d7aff377cae3d3ae4120184f5d56d1a230a5e
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical PDF_SEO_LINK_FARM rule and ClamAV detection as Pdf.Phishing.TtraffRobotInstall-7605656-0. The ML classifier also assigned a high probability of maliciousness. The document contains a large number of embedded URLs pointing to external PDF files, suggesting a link farm designed to distribute malicious content or conduct phishing attacks. No scripts were extracted from this sample.

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://stadtentdecker-in.de/uploads/1/3/0/5/130589415/wuzotibadub.pdf
    • http://oildale.news/uploads/1/3/0/3/130323733/movujumokixon.pdf
    • http://www.12applesupport.com/uploads/1/3/0/2/130289211/zujazafirisuliramos.pdf
    • http://carpetcleaningkamloops.com/uploads/1/3/0/9/130969279/54cd62.pdf
    • http://imperialcoding.com/uploads/1/3/0/6/130621218/3623192.pdf
    • http://northtexasdoodles.com/uploads/1/3/0/6/130620631/bojazevikoza_nafexerogikex_pevibeji_vivaliler.pdf
    • http://carnegieam.org/uploads/1/3/0/8/130815437/c274b52b.pdf
    • http://mineviewaero.com/uploads/1/3/0/7/130739732/3695811.pdf
    • http://pancakehowto.com/uploads/1/3/0/2/130272092/4bce3.pdf
    • http://www.nicolashaircuttingseminars.com/uploads/1/3/0/7/130738778/rekomolidarefotuxa.pdf
    • http://inspire360.net/uploads/1/3/0/6/130622059/6678595.pdf
    • http://ccpstl.org/uploads/1/3/0/4/130483739/zinedasu_lunebawokabel_resul.pdf
    • http://artwithaplan.com/uploads/1/3/0/6/130640069/f8a4849d.pdf
    • http://newlifeeastla.com/uploads/1/3/0/7/130739167/zewukijizu.pdf
    • http://kohai.moe/uploads/1/3/0/3/130313700/7914407.pdf
    • http://www.suburbanhomesofwny.com/uploads/1/3/0/7/130776319/ca866.pdf
    • http://shkola2-0.com/uploads/1/3/0/4/130489564/xokojevugajove.pdf
    • http://www.smithhallemann.cassidyturleysites.com/uploads/1/3/0/5/130590420/4922136.pdf
    • http://premierpointconsulting.com/uploads/1/3/0/6/130621613/f21a04615.pdf
    • http://adsl-63-204-18-30.benefitplans.org/uploads/1/3/0/2/130270951/130270951.html#using+cramer%27s+rule+for+a+3x3+matrix

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002db9.bin
a4cd05c2a69603df00ff2205ecc039f6cef9771ecfca3e08494705fb00851e1b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2DB9 8480 bytes

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