Malicious PDF — malware analysis report

Static analysis result for SHA-256 df30ae413bb5961f…

MALICIOUS

PDF

40.5 KB Authoring application: QPDF
MD5: a9c97ae5e6b16ddf41e611d61fa1fb10 SHA-1: aac09e63781b47676c2c5cf3ac8392f15367faa7 SHA-256: df30ae413bb5961fcf2717ea9bcbbca45a48ccb5a0134a63db659a9e839d5f27
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO poisoning or to redirect users to malicious content. The heuristic 'PDF_SEO_LINK_FARM' specifically identifies this behavior, and ClamAV detection confirms its malicious nature. The document body itself is heavily obfuscated and contains fragmented text, but the primary malicious activity appears to be the mass linking to external resources.

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://amieholmesmd.com/uploads/1/3/0/4/130490977/a70cf378f512ff.pdf
    • http://jennnorthey.com/uploads/1/3/0/5/130540795/59548af74.pdf
    • http://olympicdiscoverytrail.net/uploads/1/3/0/6/130621613/615404.pdf
    • http://clearstickerpaper.com/uploads/1/3/0/5/130542902/63c83eaa5082.pdf
    • http://yunago.org/uploads/1/3/0/4/130488885/5412351.pdf
    • http://epilepsymtcourse.org/uploads/1/3/0/2/130288348/865660.pdf
    • http://mcqjz.bpmtc.com/uploads/1/3/0/5/130539584/1730582.pdf
    • http://lakarnevalistas.com/uploads/1/3/0/9/130969679/5020918.pdf
    • http://bisconsulting.it/uploads/1/3/0/2/130287875/3177196.pdf
    • http://money4real.org/uploads/1/3/0/3/130379431/dimetizesezol_kexiru_zowirivos_nusewodunibod.pdf
    • http://sbedard.ca/uploads/1/3/0/2/130272977/lixisefiraxamopo.pdf
    • http://mesquesabons.com/uploads/1/3/0/5/130539340/3177087.pdf
    • http://queenofthewaves.net/uploads/1/3/0/7/130738628/3146282.pdf
    • http://myjcloveonline.com/uploads/1/3/0/6/130621404/7774811.pdf
    • http://nationalcatholicchoir.org/uploads/1/3/0/5/130590613/248371.pdf
    • http://infiniteserenityspa.com/uploads/1/3/0/6/130621651/pupizutuwovudud_ziremekeg_salexebewelus.pdf
    • http://detroitinvestorgroup.com/uploads/1/3/0/2/130273589/bbe3c0.pdf
    • http://solvemyskin.com/uploads/1/3/0/6/130639351/jeludezifitupagebize.pdf
    • http://barsportpobla.com/uploads/1/3/0/5/130550903/navudawasupase.pdf
    • http://aqnft.salon225.com/uploads/1/3/0/4/130478663/130478663.html#imagenes+del+abecedario+en+cursiva+mayuscula+y+minuscula
    • http://solvemyskin.com/uploads/1/3/0/6/130639351/jelud

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003e15.bin
aa38cdf9a58f8c2096e46428eee44de9c39ec44e9c81425aceaa4a7c30c8f1d2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3E15 9464 bytes

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